can anyone one help me to download maple 6 ?

In MAPLE 12 there is an option in the dropdown menu for the conversions command to convert a complex exponential expression into the cartesian form of a + bi.  However, when I review the HELP menu for the convert command I do not see this option.  Below is an example.  How do I execute the conversion via command line option as opposed to the GUI option?

convert_complex_exponential.mw

hey guys does anybody know if i can define a vector from its degree and lenght. instead of having to use coordinates?

the only way i know of defining a vector so far is

Vector1:=<x,y>

sorry my english is'nt the best

- Morten Lund

Hello again, thanks to everyone who has answered my questions.  It's difficult jumping into Maple starting with calculus 3, I wish I would've used it more in 1 and 2... BUT anyways, my question:

How do I get Maple to solve a vector equation given a time t?

For example, my two equations I want to solve are:

eq := r(t) = 2*t^2*_i+16*_j+(10*t-12)*_k

eq := r(t) = (20-6*t)*_i+4*t^2*_j+2*t^2*_k

Both solved at time t=2 ("when the airplanes collide").  I want these solved so I can use another Maple command to find the angle between the two vectors upon collision.  Does all this need to be done in steps or is there a more concise way?

How do I animate a matrixplot frame by frame so it displayes the highest and lowest value first and then sort of starts "relaxing" to the boundary conditions that will be set to 0? Thank you.

Mainly this  error comes when i make u[3] nonzero. when u[3]=0 it works. How can i remove and work with it. May i get your help please?

This is the code nnn.mw

Hi,

I have a function f(x) = x/2 on Cartesian coordinates. I want to rotate the y-axis clockwise and x-axis anticlockwise by the

same (arbitrary, acute) angle (something like the 2nd figure of http://www.ams.org/publicoutreach/feature-column/fcarc-svd),

yet I also want to retain the Cartesian grid and the function f(x) at the background. 

Could someone tell me how to do so? Thanks!

Hi,

I am writing a simple program on Maple with the command :

som:=0;

for a from 3000 to 5000 by 100 do

for b from 100 to 1000 by 100 do

for c from 3000 to 3000 by 100 do

for d from 1000 to 1000 by 100 do

for e from 1000 to 10000 by 1000 do

for f from 200 to 2000 by 100 do

for p from 1 to 10 by 1 do

tot:=0;

C2:=c*d-N^2*(f^2-b*d);

C3:=a*d-e*f;

C4:=c*e-N^2*(a*f-e*b);

if (C2>0 and C3>0 and C4>0)

then

print(a,b,c,d,e,f,p);

som:=som+1;

fi;

od;od;od;od;od;od;od;

som;

That gives me the error messsage: Error, numeric exception: division by zero

Is there a simple way to say to the program to continue to execute even it falls at some point to « bad » parameter constellations with division by zero ?

Thank you for your help !

Best regards,

Basak

Hello people in mapleprimes,

I am reading Introduction to Maple. There, the following input and output appear.

> convert((-8)^(1/3), RootOf);
1+RootOf(_Z^2 + 3, index = 1)

I think, which implies

beta^3+8=0

and

with the solution alpha of alpha^2+3=0, beta above is expressed as 1+alpha.

But, probably from my understanding being wrong, I can't understand why this becomes so.

So, though this is about mathematics, not about maple, if possible, can I ask you to teach me why

convert((-8)^(1/3), RootOf) brings 1+RootOf(_Z^2 + 3, index = 1)?

Thanks in advance.

I have upgraded my monitor  to a 4K monitor. I know how to enlarge the fonts in work-sheets and thow to increase the icons size. Is it possible to  alsoincrease the font size in the side and horizontal bars? They are ridicously small. The zoom factor facility in Tools-> Options does noit work, May this is has to be done  by some guid setting. I w\ould appreciate any help.

Thank you

Fernando

I am attempting to write a series representation of a general integral of a function from a to b as follows:

int(f(x), x = a..b)= h*sum((c_k)*f(a+kh))+O(h^p),k=1..N;

where h:=(b-a)/(N+1), p(N) is greater than or equal to N + 1 and c_k are coefficients.  I then need to write procedures with Maple to evalue c_k from 1,..,N and also to evaluate P(N) for any N.  If I take the case for N = 3 and N = 6 I have to use those procedures to prove that:

int(f(x), x = a..b)=(4h/3)*(2*f_1 - f_2 +2*f_3) + O(h^5) = (7*h/1440)*(611*(f_1 + f_6) - 453*(f_2 + f_5) + 562*(f_3 + f_4)) + O(h^7) 

where f_k = f(a + kh).  I am really at a loss as to how to write this procedure, although I may have used something similar before:

P:=proc(p) add((1/k^(1/10))*(sin(1/k)-1/k), k=1..10^p) end proc;
seq( evalhf(P(p)), p = 1 .. 5 );
 

My equation is r(t) = 3 cos(5 t)i + sin(5 t)j +3 sin(5 t)k

I think Maple is assuming that i, j, and k are variables... how do I get it to recognize them correctly?  Then, how do I plot this without changing the format of my equation?

hi . i want to get d^2 z[1] and d^2z[2] but this method give only dz[1] and dz[2] ....

restart;
q1 := 9045*(diff(z[1](t), t$2))+863728.*z[1](t) = -1963*sin(20*t);
q2 := 3454*(diff(z[2](t), t$2))+2^6*z[2](t) = -286*sin(20*t);
icy := seq([z[i](0) = 0, (D(z[i]))(0) = 0], i = 1 .. 2, 1);
so := dsolve({q1, q2, seq(icy[i][], i = 1 .. 2)}, numeric, method = classical[abmoulton], corrections = 2);
so(1);
[t = 1., z[1](t) = 0.114730517257337e-2, diff(z[1](t), t) = 0.192255592847066e-1, z[2](t) = -0.186463122818374e-3, diff(z[2](t), t) = 0.320601041204689e-2]

If w := proc (x, y) options operator, arrow; piecewise(y <= .5, -2*tanh*(y-.25), .5 < y, 2*tanh*(.75-y)) end proc

how can print w(x,y) as matrix x=0..10,y=0..10?

I have a 2 dimensional array with variable length. I want to extract the number of elements of each row. For example What is the number of element in x(1,i)?