Questions - MaplePrimes

dividing the function on its maximum...

Asked by: adel-00 135

April 05 2018

0 3

Dear all,

Trying to divide the function (f1) at its maximum and normalized it.. there is error on. the (proc)

could anyone help me on that PLEASE.

restart:
assume(Delta,real):assume(c,real):xr:=1:ao:=sqrt(1+c^2):theta:=arctan(c):a:=ao*exp(I*theta):b:=I*0.5*Delta-a*(k-1)*xr*0.5:no:=1:AA:=5:theta1:=0:Omega:=10:
f:=sqrt(Pi/ao)*exp(-I*0.5*theta)*sum(exp(b^2/a)*exp(-a*(k-1)^2*xr^2),k=1..1):alpha:=AA*exp(I*theta1):
f1:= AA^2+((Re(f))^2+(Im(f))^2)*Omega^2+2*Omega*Im(conjugate(alpha)*f):
P1:=plot3d((f1),Delta=-5..5,c=-5..5,axes=boxed,font=[1,1,18]):
Normalize:= proc(P::specfunc(anything, PLOT))
local A,Smax1;
A:= op([1,1], P);
Smax1:= max(A[..,2]);
if A::list then A:= Matrix(A) end if;
A[..,2]:= A[..,2]/Smax1;
subsop([1,1]= A, P)
end proc:
P1:= Normalize(P1):
display([P||(1..1)]);

Maple won't open...

Asked by: Chrras 20

April 05 2018

2 2

Hi

Maple 2017.3 wont open, when I launch it. I've tried updating Maple, updating Java, updating my graphic driver and of course restarting my computer. It just keeps on the loading launcher at a completely empty loading bar.

I've also tried downloading Maple 2018.0, and the same problem appears. This is how it looks:

Do anyone know how to fix this?

factor of a polynomial ...

Asked by: gaurav_rs 65

April 05 2018

0 8

>

restart;

>	Digits:=50;

>

A11:= 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>

>	factor(A11);

Warning, computation interrupted

>

(1)

>

Download factor_puz.mw

Dear Maple users,

I am struck with a polynomial. Is there a way to factor it ?

work sheet is attached.

regards,

solve the equation......

Asked by: mehran rajabi 120

April 05 2018

0 8

Hi every body:

How can I solve this equation with maple? assuming x>0

eq:=-44.51913564*sinh(sqrt(x))*x^5*sin(sqrt(x))*cos(0.6232678986e-1*x)+5.872275982*x^(11/2)*cosh(sqrt(x))*sin(sqrt(x))*cos(0.6232678986e-1*x)+5.872295982*x^(11/2)*sinh(sqrt(x))*cos(sqrt(x))*cos(0.6232678986e-1*x)-0.1e-5*x^6*sinh(sqrt(x))*sin(sqrt(x))*cos(0.6232678986e-1*x)+11465.08352*x^6*cosh(sqrt(x))*cos(sqrt(x))*cos(0.6232678986e-1*x)-0.10000e-4*x^(11/2)*sin(sqrt(x))*cos(sqrt(x))*cos(0.6232678986e-1*x)+.1246535797*cosh(sqrt(x))*x^4*cos(sqrt(x))*cos(0.6232678986e-1*x)+158.9969129*x^(9/2)*sinh(sqrt(x))*cos(sqrt(x))*cos(0.6232678986e-1*x)-94.84329962*cosh(sqrt(x))*x^5*cos(sqrt(x))*sin(0.6232678986e-1*x)-0.2e-2*x^7*sinh(sqrt(x))*sin(sqrt(x))*sin(0.6232678986e-1*x)+0.4000e-2*x^(13/2)*cosh(sqrt(x))*sin(0.6232678986e-1*x)*sinh(sqrt(x))+0.10000e-4*x^(11/2)*cosh(sqrt(x))*sinh(sqrt(x))*cos(0.6232678986e-1*x)-158.9969129*cosh(sqrt(x))*x^(9/2)*sin(sqrt(x))*cos(0.6232678986e-1*x)+38209.64552*sinh(sqrt(x))*x^6*sin(sqrt(x))*sin(0.6232678986e-1*x)-3761.932636*x^(13/2)*cosh(sqrt(x))*sin(sqrt(x))*sin(0.6232678986e-1*x)-3761.924636*x^(13/2)*sinh(sqrt(x))*cos(sqrt(x))*sin(0.6232678986e-1*x)-0.4000e-2*x^(13/2)*sin(sqrt(x))*cos(sqrt(x))*sin(0.6232678986e-1*x)-2.*10^(-7)*x^(13/2)*cosh(sqrt(x))*sin(sqrt(x))*cos(0.6232678986e-1*x)-11465.08352*x^6*cos(0.6232678986e-1*x)+.1246535797*x^4*cos(0.6232678986e-1*x)-94.84329962*x^5*sin(0.6232678986e-1*x)+0.1e-5*x^6*cosh(sqrt(x))^2*cos(0.6232678986e-1*x)-0.1e-5*x^6*cos(sqrt(x))^2*cos(0.6232678986e-1*x)+0.3e-5*cosh(sqrt(x))^2*x^6*sin(0.6232678986e-1*x)-0.2e-2*x^7*cos(sqrt(x))^2*sin(0.6232678986e-1*x)+0.2e-2*x^7*cosh(sqrt(x))^2*sin(0.6232678986e-1*x)+2.*10^(-7)*x^(13/2)*sinh(sqrt(x))*cosh(sqrt(x))*cos(0.6232678986e-1*x)+2.*10^(-7)*x^(13/2)*cos(sqrt(x))*sin(sqrt(x))*cos(0.6232678986e-1*x)-2.*10^(-7)*x^(13/2)*sinh(sqrt(x))*cos(sqrt(x))*cos(0.6232678986e-1*x)+1.159305284*10^5*cosh(sqrt(x))*x^(11/2)*sin(sqrt(x))*sin(0.6232678986e-1*x)-1.159305284*10^5*x^(11/2)*sinh(sqrt(x))*cos(sqrt(x))*sin(0.6232678986e-1*x)-8.359616334*10^6*x^7*cosh(sqrt(x))*cos(sqrt(x))*sin(0.6232678986e-1*x)+8.359616334*10^6*x^7*sin(0.6232678986e-1*x) = 0

tnx ...

batch file and directory...

Asked by: taro 505

April 05 2018

1 2

Hello people in mapleprimes,
I have two files: a batchfile named test.command, and a mpl file,
both in <<my home directory>>.

And, the codes written there are, for the test.command,

/Library/Frameworks/Maple.framework/Versions/2017/bin/maple test.mpl > output.txt

And, for the mpl file,

1+1;
diff(x^2,x);
int(x^3,x);

The test.command was made executable with chmod u+x test.command, in advance.

From my home directory, I can run the test.command, and obtain output.txt with the result of the calculation of
the mpl file. The above things have no problem.

My question is a following.

When I moved the two files, the batch file and the mpl file, to /Users/myname/Desktop/maple_test,
I cannot get maple to exhaust the appropriate output.txt but an error message, saying it could not read the mpl file.
What should be done to the contents of two files?

I hope you will teach me about this.

Thanks in advance.

taro

How to plot phase portrait?...

Asked by: Yee Voon 20

April 05 2018

0 2

Phase_potrait.mw
Hello, anybody knows how to plot phase potrait for disease free equilibrium?

>

(1)

>

sys := {diff(C(t), t) = rho*lambda*S(t)+rho*`ε`*lambda*V(t)+(1-q)*eta*I(t)-(mu+beta+chi)*C(t), diff(I(t), t) = (1-rho)*lambda*S(t)+(1-rho)*`ε`*lambda*V(t)+chi*C(t)-(mu+alpha+eta)*I(t), diff(R(t), t) = beta*C(t)+q*eta*I(t)-(mu+delta)*R(t), diff(S(t), t) = (1-p)*pi+phi*V(t)+delta*R(t)-(mu+lambda+`ϑ`)*S(t), diff(V(t), t) = p*pi+`ϑ`*S(t)-(lambda*`ε`+mu+phi)*V(t)}

(2)

>

Error, (in DEtools/DEplot/WhichPlot) More than two dependent variables - please indicate the desired scene.

>

Download Phase_potrait.mw

>

(1)

>

sys := {diff(C(t), t) = rho*lambda*S(t)+rho*`ε`*lambda*V(t)+(1-q)*eta*I(t)-(mu+beta+chi)*C(t), diff(I(t), t) = (1-rho)*lambda*S(t)+(1-rho)*`ε`*lambda*V(t)+chi*C(t)-(mu+alpha+eta)*I(t), diff(R(t), t) = beta*C(t)+q*eta*I(t)-(mu+delta)*R(t), diff(S(t), t) = (1-p)*pi+phi*V(t)+delta*R(t)-(mu+lambda+`ϑ`)*S(t), diff(V(t), t) = p*pi+`ϑ`*S(t)-(lambda*`ε`+mu+phi)*V(t)}

(2)

>

Error, (in DEtools/DEplot/WhichPlot) More than two dependent variables - please indicate the desired scene.

>

Download Phase_potrait.mw

General mathematics discussion forum...

Asked by: tsunamiBTP 292

April 04 2018

0 2

Does MAPLEPrimes or MAPLESoft host a discussion forum on mathematics in general? I know this site generally supports troubleshooting & code application. I have had a couple of instances where I have posted a question that gets no responses because the question may fall outside the perview or objectives of troubleshooting & code application. Perhaps I should pose these questions elsewhere?

How to calculate an array using initial and final ...

Asked by: m_magooda 20

April 04 2018

1 2

Hello,

I'm still new to maple, so I hope someone could help me out here

In the file attached I'm trying to generate equations depending on an array of values T[0 to m], of these I've the first T[0] and final T[m] values

before I set these 2 values, I got equations in T0 to T6 setting m=6, when i used the 2 values known i got the same equations only with T0 and T6 substituted, how do i solve them to get the rest of the T values, T1 , T2, and so on

thank you,

Download Advheat-ex52.mw

How do I create a function for this? ...

Asked by: slevy2 10

April 04 2018

0 1

Hi everyone,

I'm trying to create a function that utilizes the index of a vector to preform the following:

Where x and y are both nx1 vectors. I've tried using summation to no avail, as you can see below:

Of course, it works when I do it this way, but it's incredibly inefficient if the vectors have a large number of rows:

Any help y'all can give me would be extremely appreciated! Thank you kindly

Finding the value intersection between two lines i...

Asked by: MapleUser2017 175

April 04 2018

0 2

Hi I am trying to get Maple to find for which value k two parametric lines intersect using geom3d package. Is that possible?

my code is as follows.

restart; with(geom3d);

#First I define the the point and vector to construct the line l.

point(P, 1, 0, -2);

v := [1, 1, 2];

line(l, {P, v});

Equation(l) = [1 + t, t, -2 + 2 t]

#Next I try to define the line m.
line(m, [k*s+4, 2*s, 3*s], s)

but how (if possible to I get the line to take in the second paramter k?

and if its possible? which syntax do I use in the intersection-command to get Maple to print out the value k? so it still uses the parameter s for the intersection?

best regards

Fred

Can I hide input in a Document Block with inline e...

Asked by: peter2108 95

April 04 2018

1 2

I want to include the result of an evaluation in a document block that is included in a workbook. It is easy to write sin(Pi) and obtatin sin(Pi)=0 in your document block. Howwever in the case below I want to preserve only y=x/3 removing the isolate(...) expression. Does anyone know if this can be done and if so how to do it?