Items tagged with syntax

how are iterated functions represented in maple? as in f(f(f(x))) is f^3(x)(x)  in conventional notation where by the reader knows it is refering to the iteration conducted 3 times on the argument x, but what does maple use to differentiate between iteration ,exponentiation and differentiation?

when writing by error the following

restart;
f:=proc()
dsolve(diff(y(x),x)+y(x)=0,y(x));
end proc();

Maple did not complain and returned  f := y(x) = _C1*exp(-x)

Then I noticed I needed to change "end proc();" to "end proc;" 

The question is, why did Maple not generate a syntax error? If "end proc();" is valid Maple code, then what does it mean? or Did Maple ignore it? what is the parsing steps used to make Maple generate the above output? 

Hello every one,please help me for plotting this equation(T).L=1,t=10,a=0.1,x=0..1

I have two sets 

f:={1,2,3,4};

h:={1,2,4,5}

L=seq(i,i=1..4):

I want to program , if it is true that f[i] = h[i], then it prints f[i]. So the output should be {1,2}.

for i in L do
if evalb(f[i]=h[i]) then
print(f[i]);
end if;
end do;

I get no output. https://i.imgur.com/qA5hU3i.png

I tried changing the set f to list, f:= [1,2,3,4], still no output.

hi .please help me for solve this equations.

bbb2.mw

restart; d[11] := 1; mu[11] := 1; q[311] := 1; d[33] := 1; mu[33] := 1; a[11] := 1; e[311] := 1; a[33] := 1; A := 1; g[111111] := 1; c[1111] := 1; g[113113] := 1; f[3113] := 1; beta[11] := 1; `ΔT` := 1; II := 1; L := 1

J := d[11]*(diff(Phi(x, z), x, x))+mu[11]*(diff(psi(x, z), x, x))+q[311]*(diff(w(x), x, x))+d[33]*(diff(Phi(x, z), z, z))+mu[33]*(diff(psi(x, z), z, z));

diff(diff(Phi(x, z), x), x)+diff(diff(psi(x, z), x), x)+diff(diff(w(x), x), x)+diff(diff(Phi(x, z), z), z)+diff(diff(psi(x, z), z), z)

(1)

B := a[11]*(diff(Phi(x, z), x, x))+d[11]*(diff(psi(x, z), x, x))+e[311]*(diff(w(x), x, x))+a[33]*(diff(Phi(x, z), z, z))+d[33]*(diff(psi(x, z), z, z));

diff(diff(Phi(x, z), x), x)+diff(diff(psi(x, z), x), x)+diff(diff(w(x), x), x)+diff(diff(Phi(x, z), z), z)+diff(diff(psi(x, z), z), z)

(2)

R := A*(g[111111]*(diff(u[0](x), x, x, x, x))-c[1111]*(diff(u[0](x), x, x)+(1/2)*(diff((diff(w(x), x))^2, x)))+e[311]*(diff(diff(Phi(x, z), z), x))+q[311]*(diff(diff(psi(x, z), z), x)));

diff(diff(diff(diff(u[0](x), x), x), x), x)-(diff(diff(u[0](x), x), x))-(diff(w(x), x))*(diff(diff(w(x), x), x))+diff(diff(Phi(x, z), x), z)+diff(diff(psi(x, z), x), z)

(3)

S := -II*g[111111]*(diff(w(x), x, x, x, x, x, x))-II*c[1111]*(diff(w(x), x, x, x, x))+A*g[113113]*(diff(w(x), x, x, x, x))-A*f[3113]*(diff(diff(Phi(x, z), z), x, x))-A*(c[1111]*(diff(u[0](x), x, x)+(1/2)*(diff((diff(w(x), x))^2, x)))+e[311]*(diff(diff(Phi(x, z), z), x))+q[311]*(diff(diff(psi(x, z), z), x)))*(diff(w(x), x))-A*(diff(w(x), x, x))*(c[1111]*(diff(u[0](x), x)+(1/2)*(diff(w(x), x))^2)+e[311]*(diff(Phi(x, z), z))+q[311]*(diff(psi(x, z), z))-beta[11]*`ΔT`);

-(diff(diff(diff(diff(diff(diff(w(x), x), x), x), x), x), x))-(diff(diff(diff(Phi(x, z), x), x), z))-(diff(diff(u[0](x), x), x)+(diff(w(x), x))*(diff(diff(w(x), x), x))+diff(diff(Phi(x, z), x), z)+diff(diff(psi(x, z), x), z))*(diff(w(x), x))-(diff(diff(w(x), x), x))*(diff(u[0](x), x)+(1/2)*(diff(w(x), x))^2+diff(Phi(x, z), z)+diff(psi(x, z), z)-1)

(4)

dsys := {B, J, R, S}; BCS := {D@@2*w(0) = 0, D@@2*w(L) = 0, Phi(x = 0) = 0, Phi(x = L) = 0, Phi(z = -(1/2)*h) = 0, Phi(z = (1/2)*h) = 0, psi(x = 0) = 0, psi(x = L) = 0, psi(z = -(1/2)*h) = 0, psi(z = (1/2)*h) = 0, w(x = 0) = 0, w(x = L) = 0, u[0](x = 0) = 0, u[0](x = L) = 0, (D(w))(0) = 0, (D(w))(L) = 0, (D(u[0]))(0) = 0, (D(u[0]))(L) = 0}

{D@@2*w(0) = 0, D@@2*w(L) = 0, Phi(x = 0) = 0, Phi(x = L) = 0, Phi(z = -(1/2)*h) = 0, Phi(z = (1/2)*h) = 0, psi(x = 0) = 0, psi(x = L) = 0, psi(z = -(1/2)*h) = 0, psi(z = (1/2)*h) = 0, w(x = 0) = 0, w(x = L) = 0, u[0](x = 0) = 0, u[0](x = L) = 0, (D(w))(0) = 0, (D(w))(L) = 0, (D(u[0]))(0) = 0, (D(u[0]))(L) = 0}

(5)

dsol5 := dsolve(dsys, numeric)

Error, (in dsolve/numeric/process_input) missing differential equations and initial or boundary conditions in the first argument: dsys

 

NULL

NULL

NULL

if former equations are not solvable , please help me for another way, in which at first two equation solve..in this way in equation [J and B] assume that q[311]=e[311]=0 and dsolve perform to find Φ and  ψ

after by finding Φ and  ψ is use for detemine w and u0

please see attached file below[bbb2_2.mw]

bbb2_2.mw

Download bbb2.mw

 

hi all,

How could I write long commands in Maple?

For instance: a long vector in Matlab could be written in this way:

A=[ 3, 4, 5, 6, 6, 45, 37...

5, 4, 67, 39, -967 ];

But what is that in Maple??? 


Trying to build a block matrix. Having a problem getting the syntax correct. Can't add in the predefind matrices to the lower band.

restart

with(LinearAlgebra):

interface(displayprecision = 5)

5

(1)

interface(rtablesize = 81)

10

(2)

S := 2

2

(3)

dmax := 7

7

(4)

CCnew0 := Matrix(2, 2, {(1, 1) = 336750255587/3769550688757, (1, 2) = -14853552191797/1696297809940650, (2, 1) = 665096091/76929605893, (2, 2) = 1328910382993/11539440883950})

CCnew0 := Matrix(2, 2, {(1, 1) = 336750255587/3769550688757, (1, 2) = -14853552191797/1696297809940650, (2, 1) = 665096091/76929605893, (2, 2) = 1328910382993/11539440883950})

(5)

CCnew1 := Matrix(2, 2, {(1, 1) = 49655436033349/56543260331355, (1, 2) = -75647656451147/1413581508283875, (2, 1) = 29849106694/384648029465, (2, 2) = 10591394356218/9616200736625})

CCnew1 := Matrix(2, 2, {(1, 1) = 49655436033349/56543260331355, (1, 2) = -75647656451147/1413581508283875, (2, 1) = 29849106694/384648029465, (2, 2) = 10591394356218/9616200736625})

(6)

CCnew2 := Matrix(2, 2, {(1, 1) = 299962512141959/80776086187650, (1, 2) = -1231816081155781/8481489049703250, (2, 1) = 155175716729/549497184950, (2, 2) = 260449617208489/57697204419750})

CCnew2 := Matrix(2, 2, {(1, 1) = 299962512141959/80776086187650, (1, 2) = -1231816081155781/8481489049703250, (2, 1) = 155175716729/549497184950, (2, 2) = 260449617208489/57697204419750})

(7)

CCnew3 := Matrix(2, 2, {(1, 1) = 50445725001719/5769720441975, (1, 2) = -9065291388901/40388043093825, (2, 1) = 21111399914/39249798925, (2, 2) = 2819495262394/274748592475})

CCnew3 := Matrix(2, 2, {(1, 1) = 50445725001719/5769720441975, (1, 2) = -9065291388901/40388043093825, (2, 1) = 21111399914/39249798925, (2, 2) = 2819495262394/274748592475})

(8)

CCnew4 := Matrix(2, 2, {(1, 1) = 142685068141037/11539440883950, (1, 2) = -116560067351321/565432603313550, (2, 1) = 44654487647/78499597850, (2, 2) = 53741323977599/3846480294650})

CCnew4 := Matrix(2, 2, {(1, 1) = 142685068141037/11539440883950, (1, 2) = -116560067351321/565432603313550, (2, 1) = 44654487647/78499597850, (2, 2) = 53741323977599/3846480294650})

(9)

CCnew5 := Matrix(2, 2, {(1, 1) = 60560690824604/5769720441975, (1, 2) = -88774498025543/848148904970325, (2, 1) = 12484906049/39249798925, (2, 2) = 65745570806567/5769720441975})

CCnew5 := Matrix(2, 2, {(1, 1) = 60560690824604/5769720441975, (1, 2) = -88774498025543/848148904970325, (2, 1) = 12484906049/39249798925, (2, 2) = 65745570806567/5769720441975})

(10)

CCnew6 := Matrix(2, 2, {(1, 1) = 20398649489879/4121228887125, (1, 2) = -5446073753219/242328258562950, (2, 1) = 14465459393/196248994625, (2, 2) = 8502096238511/1648491554850})

CCnew6 := Matrix(2, 2, {(1, 1) = 20398649489879/4121228887125, (1, 2) = -5446073753219/242328258562950, (2, 1) = 14465459393/196248994625, (2, 2) = 8502096238511/1648491554850})

(11)

S*dmax

14

(12)

M1 := Matrix(S*dmax, S*dmax, [Matrix(S*(dmax-1), S), Matrix(S*(dmax-1), shape = identity), Matrix(S, S*dmax, [seq(-CCnew || n, n = 0 .. dmax-1)])])

Error, (in Matrix) this entry is too tall or too short: Matrix(2, 14, {(1, 1) = -336750255587/3769550688757, (1, 2) = 14853552191797/1696297809940650, (1, 3) = -49655436033349/56543260331355, (1, 4) = 75647656451147/1413581508283875, (1, 5) = -299962512141959/80776086187650, (1, 6) = 1231816081155781/8481489049703250, (1, 7) = -50445725001719/5769720441975, (1, 8) = 9065291388901/40388043093825, (1, 9) = -142685068141037/11539440883950, (1, 10) = 116560067351321/565432603313550, (1, 11) = -60560690824604/5769720441975, (1, 12) = 88774498025543/848148904970325, (1, 13) = -20398649489879/4121228887125, (1, 14) = 5446073753219/242328258562950, ...

 

M2 := Matrix(S*dmax, S*dmax, [Matrix(S*(dmax-1), S), Matrix(S*(dmax-1), shape = identity)])

M2 := Matrix(14, 14, {(1, 1) = 0, (1, 2) = 0, (1, 3) = 1, (1, 4) = 0, (1, 5) = 0, (1, 6) = 0, (1, 7) = 0, (1, 8) = 0, (1, 9) = 0, (1, 10) = 0, (1, 11) = 0, (1, 12) = 0, (1, 13) = 0, (1, 14) = 0, (2, 1) = 0, (2, 2) = 0, (2, 3) = 0, (2, 4) = 1, (2, 5) = 0, (2, 6) = 0, (2, 7) = 0, (2, 8) = 0, (2, 9) = 0, (2, 10) = 0, (2, 11) = 0, (2, 12) = 0, (2, 13) = 0, (2, 14) = 0, (3, 1) = 0, (3, 2) = 0, (3, 3) = 0, (3, 4) = 0, (3, 5) = 1, (3, 6) = 0, (3, 7) = 0, (3, 8) = 0, (3, 9) = 0, (3, 10) = 0, (3, 11) = 0, (3, 12) = 0, (3, 13) = 0, (3, 14) = 0, (4, 1) = 0, (4, 2) = 0, (4, 3) = 0, (4, 4) = 0, (4, 5) = 0, (4, 6) = 1, (4, 7) = 0, (4, 8) = 0, (4, 9) = 0, (4, 10) = 0, (4, 11) = 0, (4, 12) = 0, (4, 13) = 0, (4, 14) = 0, (5, 1) = 0, (5, 2) = 0, (5, 3) = 0, (5, 4) = 0, (5, 5) = 0, (5, 6) = 0, (5, 7) = 1, (5, 8) = 0, (5, 9) = 0, (5, 10) = 0, (5, 11) = 0, (5, 12) = 0, (5, 13) = 0, (5, 14) = 0, (6, 1) = 0, (6, 2) = 0, (6, 3) = 0, (6, 4) = 0, (6, 5) = 0, (6, 6) = 0, (6, 7) = 0, (6, 8) = 1, (6, 9) = 0, (6, 10) = 0, (6, 11) = 0, (6, 12) = 0, (6, 13) = 0, (6, 14) = 0, (7, 1) = 0, (7, 2) = 0, (7, 3) = 0, (7, 4) = 0, (7, 5) = 0, (7, 6) = 0, (7, 7) = 0, (7, 8) = 0, (7, 9) = 1, (7, 10) = 0, (7, 11) = 0, (7, 12) = 0, (7, 13) = 0, (7, 14) = 0, (8, 1) = 0, (8, 2) = 0, (8, 3) = 0, (8, 4) = 0, (8, 5) = 0, (8, 6) = 0, (8, 7) = 0, (8, 8) = 0, (8, 9) = 0, (8, 10) = 1, (8, 11) = 0, (8, 12) = 0, (8, 13) = 0, (8, 14) = 0, (9, 1) = 0, (9, 2) = 0, (9, 3) = 0, (9, 4) = 0, (9, 5) = 0, (9, 6) = 0, (9, 7) = 0, (9, 8) = 0, (9, 9) = 0, (9, 10) = 0, (9, 11) = 1, (9, 12) = 0, (9, 13) = 0, (9, 14) = 0, (10, 1) = 0, (10, 2) = 0, (10, 3) = 0, (10, 4) = 0, (10, 5) = 0, (10, 6) = 0, (10, 7) = 0, (10, 8) = 0, (10, 9) = 0, (10, 10) = 0, (10, 11) = 0, (10, 12) = 1, (10, 13) = 0, (10, 14) = 0, (11, 1) = 0, (11, 2) = 0, (11, 3) = 0, (11, 4) = 0, (11, 5) = 0, (11, 6) = 0, (11, 7) = 0, (11, 8) = 0, (11, 9) = 0, (11, 10) = 0, (11, 11) = 0, (11, 12) = 0, (11, 13) = 1, (11, 14) = 0, (12, 1) = 0, (12, 2) = 0, (12, 3) = 0, (12, 4) = 0, (12, 5) = 0, (12, 6) = 0, (12, 7) = 0, (12, 8) = 0, (12, 9) = 0, (12, 10) = 0, (12, 11) = 0, (12, 12) = 0, (12, 13) = 0, (12, 14) = 1, (13, 1) = 0, (13, 2) = 0, (13, 3) = 0, (13, 4) = 0, (13, 5) = 0, (13, 6) = 0, (13, 7) = 0, (13, 8) = 0, (13, 9) = 0, (13, 10) = 0, (13, 11) = 0, (13, 12) = 0, (13, 13) = 0, (13, 14) = 0, (14, 1) = 0, (14, 2) = 0, (14, 3) = 0, (14, 4) = 0, (14, 5) = 0, (14, 6) = 0, (14, 7) = 0, (14, 8) = 0, (14, 9) = 0, (14, 10) = 0, (14, 11) = 0, (14, 12) = 0, (14, 13) = 0, (14, 14) = 0})

(13)

lowerband := Matrix(S, S*dmax, [seq(-evalf(CCnew || n), n = 0 .. dmax-1)])

lowerband := Matrix(2, 14, {(1, 1) = -0.893343e-1, (1, 2) = 0.875645e-2, (1, 3) = -.878185, (1, 4) = 0.535149e-1, (1, 5) = -3.71351, (1, 6) = .145236, (1, 7) = -8.74318, (1, 8) = .224455, (1, 9) = -12.36499, (1, 10) = .206143, (1, 11) = -10.49630, (1, 12) = .104669, (1, 13) = -4.94965, (1, 14) = 0.224740e-1, (2, 1) = -0.864552e-2, (2, 2) = -.115162, (2, 3) = -0.776011e-1, (2, 4) = -1.10141, (2, 5) = -.282396, (2, 6) = -4.51408, (2, 7) = -.537873, (2, 8) = -10.26209, (2, 9) = -.568850, (2, 10) = -13.97156, (2, 11) = -.318088, (2, 12) = -11.39493, (2, 13) = -0.737097e-1, (2, 14) = -5.15750})

(14)

M3 := Matrix(S*dmax, S*dmax, [Matrix(S*(dmax-1), S), Matrix(S*(dmax-1), shape = identity), lowerband])

Error, (in Matrix) this entry is too tall or too short: Matrix(2, 14, {(1, 1) = -0.8933432215e-1, (1, 2) = 0.8756453086e-2, (1, 3) = -.8781848755, (1, 4) = 0.5351488825e-1, (1, 5) = -3.713506389, (1, 6) = .1452358276, (1, 7) = -8.743183575, (1, 8) = .224454831, (1, 9) = -12.36498974, (1, 10) = .2061431666, (1, 11) = -10.49629552, (1, 12) = .1046685287, (1, 13) = -4.949652167, (1, 14) = 0.2247395242e-1, (2, 1) = -0.8645515381e-2, (2, 2) = -.1151624586, (2, 3) = -0.7760109089e-1, (2, 4) = -1.101411529, (2, 5) = -.2823958356, (2, 6) = -4.514076892, (2, 7) = -.537872817, (2, 8) = -10.26209174, (2, 9) = -.5688498906, (2, 10) = -13.97155838, (2, 1...

 

``


Download Test_Block_matrix.mw

restart

with(LinearAlgebra):

interface(displayprecision = 5)

5

(1)

interface(rtablesize = 81)

10

(2)

S := 2

2

(3)

dmax := 7

7

(4)

CCnew0 := Matrix(2, 2, {(1, 1) = 336750255587/3769550688757, (1, 2) = -14853552191797/1696297809940650, (2, 1) = 665096091/76929605893, (2, 2) = 1328910382993/11539440883950})

CCnew0 := Matrix(2, 2, {(1, 1) = 336750255587/3769550688757, (1, 2) = -14853552191797/1696297809940650, (2, 1) = 665096091/76929605893, (2, 2) = 1328910382993/11539440883950})

(5)

CCnew1 := Matrix(2, 2, {(1, 1) = 49655436033349/56543260331355, (1, 2) = -75647656451147/1413581508283875, (2, 1) = 29849106694/384648029465, (2, 2) = 10591394356218/9616200736625})

CCnew1 := Matrix(2, 2, {(1, 1) = 49655436033349/56543260331355, (1, 2) = -75647656451147/1413581508283875, (2, 1) = 29849106694/384648029465, (2, 2) = 10591394356218/9616200736625})

(6)

CCnew2 := Matrix(2, 2, {(1, 1) = 299962512141959/80776086187650, (1, 2) = -1231816081155781/8481489049703250, (2, 1) = 155175716729/549497184950, (2, 2) = 260449617208489/57697204419750})

CCnew2 := Matrix(2, 2, {(1, 1) = 299962512141959/80776086187650, (1, 2) = -1231816081155781/8481489049703250, (2, 1) = 155175716729/549497184950, (2, 2) = 260449617208489/57697204419750})

(7)

CCnew3 := Matrix(2, 2, {(1, 1) = 50445725001719/5769720441975, (1, 2) = -9065291388901/40388043093825, (2, 1) = 21111399914/39249798925, (2, 2) = 2819495262394/274748592475})

CCnew3 := Matrix(2, 2, {(1, 1) = 50445725001719/5769720441975, (1, 2) = -9065291388901/40388043093825, (2, 1) = 21111399914/39249798925, (2, 2) = 2819495262394/274748592475})

(8)

CCnew4 := Matrix(2, 2, {(1, 1) = 142685068141037/11539440883950, (1, 2) = -116560067351321/565432603313550, (2, 1) = 44654487647/78499597850, (2, 2) = 53741323977599/3846480294650})

CCnew4 := Matrix(2, 2, {(1, 1) = 142685068141037/11539440883950, (1, 2) = -116560067351321/565432603313550, (2, 1) = 44654487647/78499597850, (2, 2) = 53741323977599/3846480294650})

(9)

CCnew5 := Matrix(2, 2, {(1, 1) = 60560690824604/5769720441975, (1, 2) = -88774498025543/848148904970325, (2, 1) = 12484906049/39249798925, (2, 2) = 65745570806567/5769720441975})

CCnew5 := Matrix(2, 2, {(1, 1) = 60560690824604/5769720441975, (1, 2) = -88774498025543/848148904970325, (2, 1) = 12484906049/39249798925, (2, 2) = 65745570806567/5769720441975})

(10)

CCnew6 := Matrix(2, 2, {(1, 1) = 20398649489879/4121228887125, (1, 2) = -5446073753219/242328258562950, (2, 1) = 14465459393/196248994625, (2, 2) = 8502096238511/1648491554850})

CCnew6 := Matrix(2, 2, {(1, 1) = 20398649489879/4121228887125, (1, 2) = -5446073753219/242328258562950, (2, 1) = 14465459393/196248994625, (2, 2) = 8502096238511/1648491554850})

(11)

S*dmax

14

(12)

M1 := Matrix(S*dmax, S*dmax, [Matrix(S*(dmax-1), S), Matrix(S*(dmax-1), shape = identity), Matrix(S, S*dmax, [seq(-CCnew || n, n = 0 .. dmax-1)])])

Error, (in Matrix) this entry is too tall or too short: Matrix(2, 14, {(1, 1) = -336750255587/3769550688757, (1, 2) = 14853552191797/1696297809940650, (1, 3) = -49655436033349/56543260331355, (1, 4) = 75647656451147/1413581508283875, (1, 5) = -299962512141959/80776086187650, (1, 6) = 1231816081155781/8481489049703250, (1, 7) = -50445725001719/5769720441975, (1, 8) = 9065291388901/40388043093825, (1, 9) = -142685068141037/11539440883950, (1, 10) = 116560067351321/565432603313550, (1, 11) = -60560690824604/5769720441975, (1, 12) = 88774498025543/848148904970325, (1, 13) = -20398649489879/4121228887125, (1, 14) = 5446073753219/242328258562950, ...

 

M2 := Matrix(S*dmax, S*dmax, [Matrix(S*(dmax-1), S), Matrix(S*(dmax-1), shape = identity)])

M2 := Matrix(14, 14, {(1, 1) = 0, (1, 2) = 0, (1, 3) = 1, (1, 4) = 0, (1, 5) = 0, (1, 6) = 0, (1, 7) = 0, (1, 8) = 0, (1, 9) = 0, (1, 10) = 0, (1, 11) = 0, (1, 12) = 0, (1, 13) = 0, (1, 14) = 0, (2, 1) = 0, (2, 2) = 0, (2, 3) = 0, (2, 4) = 1, (2, 5) = 0, (2, 6) = 0, (2, 7) = 0, (2, 8) = 0, (2, 9) = 0, (2, 10) = 0, (2, 11) = 0, (2, 12) = 0, (2, 13) = 0, (2, 14) = 0, (3, 1) = 0, (3, 2) = 0, (3, 3) = 0, (3, 4) = 0, (3, 5) = 1, (3, 6) = 0, (3, 7) = 0, (3, 8) = 0, (3, 9) = 0, (3, 10) = 0, (3, 11) = 0, (3, 12) = 0, (3, 13) = 0, (3, 14) = 0, (4, 1) = 0, (4, 2) = 0, (4, 3) = 0, (4, 4) = 0, (4, 5) = 0, (4, 6) = 1, (4, 7) = 0, (4, 8) = 0, (4, 9) = 0, (4, 10) = 0, (4, 11) = 0, (4, 12) = 0, (4, 13) = 0, (4, 14) = 0, (5, 1) = 0, (5, 2) = 0, (5, 3) = 0, (5, 4) = 0, (5, 5) = 0, (5, 6) = 0, (5, 7) = 1, (5, 8) = 0, (5, 9) = 0, (5, 10) = 0, (5, 11) = 0, (5, 12) = 0, (5, 13) = 0, (5, 14) = 0, (6, 1) = 0, (6, 2) = 0, (6, 3) = 0, (6, 4) = 0, (6, 5) = 0, (6, 6) = 0, (6, 7) = 0, (6, 8) = 1, (6, 9) = 0, (6, 10) = 0, (6, 11) = 0, (6, 12) = 0, (6, 13) = 0, (6, 14) = 0, (7, 1) = 0, (7, 2) = 0, (7, 3) = 0, (7, 4) = 0, (7, 5) = 0, (7, 6) = 0, (7, 7) = 0, (7, 8) = 0, (7, 9) = 1, (7, 10) = 0, (7, 11) = 0, (7, 12) = 0, (7, 13) = 0, (7, 14) = 0, (8, 1) = 0, (8, 2) = 0, (8, 3) = 0, (8, 4) = 0, (8, 5) = 0, (8, 6) = 0, (8, 7) = 0, (8, 8) = 0, (8, 9) = 0, (8, 10) = 1, (8, 11) = 0, (8, 12) = 0, (8, 13) = 0, (8, 14) = 0, (9, 1) = 0, (9, 2) = 0, (9, 3) = 0, (9, 4) = 0, (9, 5) = 0, (9, 6) = 0, (9, 7) = 0, (9, 8) = 0, (9, 9) = 0, (9, 10) = 0, (9, 11) = 1, (9, 12) = 0, (9, 13) = 0, (9, 14) = 0, (10, 1) = 0, (10, 2) = 0, (10, 3) = 0, (10, 4) = 0, (10, 5) = 0, (10, 6) = 0, (10, 7) = 0, (10, 8) = 0, (10, 9) = 0, (10, 10) = 0, (10, 11) = 0, (10, 12) = 1, (10, 13) = 0, (10, 14) = 0, (11, 1) = 0, (11, 2) = 0, (11, 3) = 0, (11, 4) = 0, (11, 5) = 0, (11, 6) = 0, (11, 7) = 0, (11, 8) = 0, (11, 9) = 0, (11, 10) = 0, (11, 11) = 0, (11, 12) = 0, (11, 13) = 1, (11, 14) = 0, (12, 1) = 0, (12, 2) = 0, (12, 3) = 0, (12, 4) = 0, (12, 5) = 0, (12, 6) = 0, (12, 7) = 0, (12, 8) = 0, (12, 9) = 0, (12, 10) = 0, (12, 11) = 0, (12, 12) = 0, (12, 13) = 0, (12, 14) = 1, (13, 1) = 0, (13, 2) = 0, (13, 3) = 0, (13, 4) = 0, (13, 5) = 0, (13, 6) = 0, (13, 7) = 0, (13, 8) = 0, (13, 9) = 0, (13, 10) = 0, (13, 11) = 0, (13, 12) = 0, (13, 13) = 0, (13, 14) = 0, (14, 1) = 0, (14, 2) = 0, (14, 3) = 0, (14, 4) = 0, (14, 5) = 0, (14, 6) = 0, (14, 7) = 0, (14, 8) = 0, (14, 9) = 0, (14, 10) = 0, (14, 11) = 0, (14, 12) = 0, (14, 13) = 0, (14, 14) = 0})

(13)

lowerband := Matrix(S, S*dmax, [seq(-evalf(CCnew || n), n = 0 .. dmax-1)])

lowerband := Matrix(2, 14, {(1, 1) = -0.893343e-1, (1, 2) = 0.875645e-2, (1, 3) = -.878185, (1, 4) = 0.535149e-1, (1, 5) = -3.71351, (1, 6) = .145236, (1, 7) = -8.74318, (1, 8) = .224455, (1, 9) = -12.36499, (1, 10) = .206143, (1, 11) = -10.49630, (1, 12) = .104669, (1, 13) = -4.94965, (1, 14) = 0.224740e-1, (2, 1) = -0.864552e-2, (2, 2) = -.115162, (2, 3) = -0.776011e-1, (2, 4) = -1.10141, (2, 5) = -.282396, (2, 6) = -4.51408, (2, 7) = -.537873, (2, 8) = -10.26209, (2, 9) = -.568850, (2, 10) = -13.97156, (2, 11) = -.318088, (2, 12) = -11.39493, (2, 13) = -0.737097e-1, (2, 14) = -5.15750})

(14)

M3 := Matrix(S*dmax, S*dmax, [Matrix(S*(dmax-1), S), Matrix(S*(dmax-1), shape = identity), lowerband])

Error, (in Matrix) this entry is too tall or too short: Matrix(2, 14, {(1, 1) = -0.8933432215e-1, (1, 2) = 0.8756453086e-2, (1, 3) = -.8781848755, (1, 4) = 0.5351488825e-1, (1, 5) = -3.713506389, (1, 6) = .1452358276, (1, 7) = -8.743183575, (1, 8) = .224454831, (1, 9) = -12.36498974, (1, 10) = .2061431666, (1, 11) = -10.49629552, (1, 12) = .1046685287, (1, 13) = -4.949652167, (1, 14) = 0.2247395242e-1, (2, 1) = -0.8645515381e-2, (2, 2) = -.1151624586, (2, 3) = -0.7760109089e-1, (2, 4) = -1.101411529, (2, 5) = -.2823958356, (2, 6) = -4.514076892, (2, 7) = -.537872817, (2, 8) = -10.26209174, (2, 9) = -.5688498906, (2, 10) = -13.97155838, (2, 1...

 

``


Download Test_Block_matrix.mw

hi.please help me for remove error'' 

Error, illegal use of an object as a name''

 

thanks

PLATE.mw

   

Parse:-ConvertTo1D, "first argument to _Inert_ASSIGN must be assignable"

Error, illegal use of an object as a name

"restart:Digits :=15: beta:=10:alpha:=100: xi:=.5: upsilon:=0.2841945289:n:=3: aa:=1:b:=1:N_x:=0.4:N_y:=0.4:N_xy:=0: hl2:=1:mu:=65.8e9:E:=169e9: delta0:=1:delta1:=1: mus:=3:D1:=2;h:=1: lambda:=0.1: D2:=5:A1:=-2:A2:=-2:A3:=-6:A4:=7:A5:=7:A6:=7:A7:=7:A8:=8:A9:=7:A10:=7:A11:=1: A12:=1:tau:=4.730040745:t:=0: g2:=sin(theta):g3:=cos(theta):g1:=cos(theta):a:=0.0:with(Student[Calculus1]): a1:=evalf((A1*ApproximateInt(g3^2,theta=a..1,method=simpson)  ) ) : a2:= evalf(A2*ApproximateInt(g3*((ⅆ)^2)/((ⅆtheta)^2)g3,theta=a..1,method=simpson)): a3:=evalf(A3*ApproximateInt(g3*g3,theta=a..1,method=simpson)) : a4:=evalf(A4*ApproximateInt(g3*g3,theta=a..1,method=simpson)) :a5:=evalf(A5*ApproximateInt(g3^2,theta=a..1,method=simpson)) : a6:=evalf(A6*ApproximateInt(((ⅆ)^2)/((ⅆtheta)^2)g3*g3,theta=a..1,method=simpson)) :a7:=evalf(A7*ApproximateInt(g3*g3,theta=a..1,method=simpson)): a8:=evalf(A8*ApproximateInt(g3^2,theta=a..1,method=simpson)):a9:=evalf(ApproximateInt(A9*(g3*g3 )     ,theta=a..1,method=simpson)) :a10:=evalf(A10*ApproximateInt(g3*g3,theta=a..1,method=simpson)):a11:=evalf(ApproximateInt(1,theta=a..1,method=simpson)):a12:=evalf(ApproximateInt(1*(1-1/2 (1)),theta=a..1,method=simpson)):dsys3 := { f3(x)*(a1)+ f3(x)*(a2)  +((ⅆ)^2)/((ⅆx)^2) f3(x)*(a3) +f3(x)*a4+ f3(x)*(a5) +((ⅆ)^2)/((ⅆx)^2) f3(x)*(a6) +f3(x)*a7= ((ⅆ)^2)/((ⅆx)^2) f3(x) *(a8)   + a9*(ⅆ)/(ⅆx) f3(x) +f3(x)*a10+ a11+a12  , f3(1) =0,f3(0) =0 , D^(1)(f3)(1) = 0, D^(1)(f3)(0)=0,D^(3)(f3)(1) = 0, D^(3)(f3)(0)=0}    :dsol5 := dsolve(dsys3, 'maxmesh'=2024, numeric,abserr=.0001, range=0..1, output=listprocedure):fy3:= eval(f3(x),dsol5):with(CurveFitting):fy33:=PolynomialInterpolation([[0,fy3(0)],[.1,fy3(0.1)],[.2,fy3(0.2)],[0.3,fy3(0.3)],[.4,fy3(0.4)],[.5,fy3(0.5)],[0.6,fy3(0.6)],[0.7,fy3(0.7)],[0.8,fy3(0.8)],[0.9,fy3(0.9)],[1,fy3(1)]],x): d1:=A1*ApproximateInt(((ⅆ)^6)/((ⅆx)^6)fy33*fy33,x=a..1,method=simpson)   :d2:= A2*ApproximateInt(((ⅆ)^4)/((ⅆx)^4)fy33*fy33 ,x=a..1,method=simpson)   :d3:=A3*ApproximateInt(((ⅆ)^2)/((ⅆx)^2)fy33*fy33,x=a..1,method=simpson): d4:= A4*ApproximateInt(fy33*fy33,x=a..1,method=simpson):d5:=A5*ApproximateInt(((ⅆ)^4)/((ⅆx)^4)fy33*fy33,x=a..1,method=simpson)  : d6:=A6*ApproximateInt(((ⅆ)^2)/((ⅆx)^2)fy33*fy33,x=a..1,method=simpson)    :d7:=A7*ApproximateInt(fy33*fy33,x=a..1,method=simpson)  :d8:=A8*ApproximateInt(((ⅆ)^2)/((ⅆx)^2)fy33*fy33,x=a..1,method=simpson)      :d9:=ApproximateInt(A9*(((ⅆ)^1)/((ⅆx)^1)fy33*fy33 )   ,x=a..1,method=simpson) :d10:=A10*ApproximateInt(fy33*fy33,x=a..1,method=simpson)    :d11:=evalf(ApproximateInt(1,theta=a..1,method=simpson)):d12:=evalf(ApproximateInt(1*(1-1/2 (1)),theta=a..1,method=simpson))  : d sys4 := { h3(theta)*(d1)+((ⅆ)^2)/((ⅆtheta)^2) h3(theta)*(d2)+((ⅆ)^4)/((ⅆtheta)^4) h3(theta)*(d3)+ ((ⅆ)^6)/((ⅆtheta)^6) h3(theta)*(d4)+h3(theta) *(d5)+ h3(theta) *(d6) +((ⅆ)^4)/((ⅆtheta)^4) h3(theta)*(d7)= h3(theta)*(d8)  +d9*(ⅆ)/(ⅆtheta) h3(theta)  +((ⅆ)^2)/((ⅆtheta)^2) h3(theta)*(d10)  +d11+d12   ,h3(1) = 0,h3(0) = 0 , D^(1)(h3)(1) = 0, D^(1)(h3)(0)=0,D^(3)(h3)(1) = 0, D^(3)(h3)(0)=0}  :dsol6 := dsolve(dsys4, 'maxmesh'=2024, abserr=.0001, range=0..1, numeric, output=listprocedure):g33:= eval(h3(theta),dsol6):with(CurveFitting):g3:=PolynomialInterpolation([[0,g33(0)],[.1,g33(0.1)],[.2,g33(0.2)],[0.3,g33(0.3)],[.4,g33(0.4)],[.5,g33(0.5)],[0.6,g33(0.6)],[0.7,g33(0.7)],[0.8,g33(0.8)],[0.9,g33(0.9)],[1,g33(1)]],theta):"

 

 

``

 

Download PLATE.mw

I defined a procedure, OrderB(0,b,c), that essentially determines the order of a group that is defined by 2 parameters (the first parameter is always zero), so the output is an integer and the procedure is defined for every integer value of both parameters. I wanted to structure the outputs into a matrix with columns that represent one parameter and rows that represent the other. However, whenever I try to apply a method of defining the matrix, Maple returns the values of the procedure and then gives me an empty matrix.

>f:=proc (i, j) -> OrderB(0, i, j+3);
>Matrix(3, f);
                               1
                               4
                               1
                               1
                               4
                               1
                               1
                               4
                               1
               [NULL,NULL...]


I tried a second method where I defined a set s such that:

s:={(0,0)=OrderB(0,0,0) , (0,1)=OrderB(0,0,1).....}

but upon execution, maple returns:

1
4
1
....
s:={(0,0)=( ), (0,1)=( )...}

Please Help. I don't know what I'm mising in the code that is keeping Maple from putting the outputs of my procedure into the matrix.

When experimenting with Maple 2016.1, I found several issues. One I have seen on MaplePrimes before (regarding "Error, incorrect syntax in parse: `;` unexpected (near 4th character of parsed string)" when evaluating an integral, for example, or trying to plot something), but another I have not seen - it may be related to the previous issue. Below is a document that contains some of the various errors I found. What is going on? It evaluates certain things correctly, but, in the integral, it treats "x^2" like a whole new variable (the integral of x^2 with respect to x from 0 to 2 it says is 2x^2, not 8/3). The same thing results in trying to plot x^2 (not shown), giving the same error if I were to say something like "plot(t,x=0..2)" - it cannot determine the plotting variable.
 

int(x, x = 1 .. 2)`` = 3/2NULL

int(x, x = 0 .. 2) = 2NULL

"(∫)[0]^(Pi)sin(x) ⅆx"Error, incorrect syntax in parse: `;` unexpected (near 4th character of parsed string)"(∫)[0]^Pisin(x) ⅆx"

int(`#msup(mi("x"),mn("2"))`, x = 0 .. 2) = 2*`#msup(mi("x"),mn("2"))`NULL

"(∫)[0]^(2 )(x)^(2) ⅆx"Error, incorrect syntax in parse: `;` unexpected (near 4th character of parsed string)"(∫)[0]^(2 )(x)^2 ⅆx"NULL

int(x*x, x = 0 .. 2) = 8/3``NULL

int(diff(x, x, x), x = 0 .. 2) = 0NULL

``

 

Download bad_maple.mw 

 

Any ideas? Are the two things (the Error, incorrect syntax in parse: `;` unexpected (near 4th character of parsed string) message and the bad integral value) related?

 

How i need to write 

>teksbiasa:=`Hello! Bob`;

in button Action When Clicked at simple graphical interface instead of

Do(teksbiasa=%txtTeksBiasa);

because when i enter Hello! Bob in %txtTeksBiasa, system pop up ERROR

 

Error

Error in Component button with caption "Botton":

(in unknown) incorrect syntax in parse: missing operator or

`;`(near 7th character of parsed string)

 

Thank you~=]]

I have the following problem : plotting with the squareroot function somehow stops showing the whole graph as soon as the range of the input allows values less than -10, I have attached two pictures that show the transition:

 

This is still fine:

 

But here is an example where the graph is cropped:

How can I change this to get the whole graph ? Thanks a lot for your help !!

 

 

I'm trying to solve a system of two differential equations of the second order in Maple. I set it up as a system of four differential equations of the first order, but after calling for the solution, all I get back is what I entered in without receiving a solution of any sort. What do I need to fix?

Here's what I did:

_________________________________________________

> with(plots);
print(`output redirected...`); # input placeholder

> m := 0.46e-1; d := 0.42e-1; v := 60; alpha0 := 12; g := 9.81; pa := 1.205; cd := .2; n := 100; omega := 2*Pi*(1/60);
                            
> p := 6*m/(Pi*d^3);

> k1 := (3/4)*cd*pa/(d*p); k2 := (3/8)*omega*pa/p;
                                        
> gl1 := vx(t) = diff(x(t), t);                   
> gl2 := vy(t) = diff(y(t), t);
                              
> gl3 := diff(vx(t), t) = -k1*vx(t)*(vx(t)^2+vy(t)^2)^(1/2)-k2*vy(t);
 
> gl4 := diff(vy(t), t) = -g-k1*vy(t)*(vx(t)^2+vy(t)^2)^(1/2)+k2*vy(t);


> init1 := x(0) = 0;
> init2 := y(0) = 0;
> init3 := vx(0) = v*cos((1/15)*Pi);                              
> init4 := vy(0) = v*sin((1/15)*Pi);

> sol; dsolve({gl1, gl2, gl3, gl4, init1, init2, init3, init4}, {vx(t), vy(t), x(t), y(t)}, type = numeric);

> sol(.1);
                            sol(0.1)

> odeplot(sol, t, x(t), t, y(t), t = 0 .. 1);
                   Error, (in plots/odeplot) input is not a valid dsolve/numeric solution


____________________________________________________________________________

After calling for the solution at t=0.1, I don't get anything back. I also tried plotting the solution, but then I receive an error message.

So, I am working in a partial differeital equations course and we are doing image processing. I am taking an image and pixel by pixel applying the heat equation to smudge out noise. I created a for loop for the equation and it works, I need to itterate it over and over again. Here is my code:

for t from 1 to 20 do    

for j from 2 to 149 do

for k from 2 to 149 do  

`tile2__j,k`:=dellT/(h^(2))*(`tile__j+1,k`-4*`tile__j,k`+`tile__j-1,k`+`tile__j,k-1`)+`tile__j,k`  

 end do

end do  

for m from 2 to 149 do

for n from 2 to 149 do  

`tile__m,n`:= `tile2__m,n`  

end do

end do  

t := t+1  

end do

 

Sorry, I could not get the Maple Math editor to work so I just copied my code. Apologize. I keep getting the error "Error, Invalid loop statement termination." Help?

 

Hi, I have defined two functions:

ex1 := (x,t,z) -> -1.132*10^(11)* exp(9.9*10^(6)*x)*exp(sqrt(-1)*(1.95*10^6*z-2.98*10^15*t))

 

ex2 := (x,t,z) -> -2.82*10^(12)* exp(2*10^(6)*sqrt(-1)*x)*exp(sqrt(-1)*(1.95e*10^(6)*z-2.98*10^(15)*t));

 

And then tried the command:

 

implicitplot3d( ex1, x = -10..0, t = 0..10, z = 0..10, axes = boxed, style = patchcontour, scaling = constrained, shading =z);

 

But the boxes are entirely blank! What is the problem here?? It should be some kind of sine curve

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