Maple 18 Questions and Posts

How can i re-install maple 18....

Asked by: Oscar Jaramillo 0

March 17 2023

0 2

Dear Friends

On 22 March 2018, I received:

ORDER REFERENCE INFORMATION

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Customer: Universidad Nacional Autonoma De Mexico, UNAM

Order Date: 3/21/2018

Order Number: 889668

Customer Purchase Order: 10972

For instaling MAPLE 18

Please see the at bottom of the mail

I am trying to reinstall MAPLE 18. Unfortunately the download link

• http://www.maplesoft.com/downloads/?d=3818426C1C82FED050562AB71F77C087&pr=Maple2018

It's no longer available. Please send me a link to download Version MAPLE 18. Thank you very much for your time and consideration.

Best Regards

Oscar Jaramillo-Salgado

El 22 mar 2018, a las 11:05, license@maplesoft.com escribió:

Dear Oscar Jaramillo Salgado,

Here is your copy of Maple 2018. And this is not a release to ignore!

People use Maple to do many different things, so it’s inevitable that each new release will include some features you care about and some features you really don’t need. However, Maple 2018 contains a large number of substantial enhancements to how you interact with Maple, which means you’ll benefit from this release no matter what you use Maple for.

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If you would like a physical copy of your product(s) shipped to you, please go to http://www.maplesoft.com/entitlements. You will need the email address that this email was sent to along with the order number.

ORDER REFERENCE INFORMATION
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Order Date: 3/21/2018
Order Number: 889668
Customer Purchase Order: 10972

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Downloads:

Maple 2018: http://www.maplesoft.com/downloads/?d=3818426C1C82FED050562AB71F77C087&pr=Maple2018

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Product: Maple2018 Single User Entitlement Download for 1 user(s) (includes 1 home use license(s))

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SUPPORT
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Maple Code to solve Perturbation Iteration Solutio...

Asked by: abiodunowoyemi9 20

January 14 2023

1 0

Hi,

May I please get a Maple code to solve the below Perturbation Iteration Solutions for Volterra Integral Equations?

I shall be very much grateful if I can get the Maple Code.

And possible plotting

Thanks

Simplification of polynomials on radicals....

Asked by: ContrapuntoBrowniano 35

November 28 2022

0 1

Hi! I need to simplify a polynomial over an arbitrary field F on a radical variable ν, such that for some power j, ν is in F.

the polynomial takes the form:

k₀+a₁ν^1/j+...+a_nν^n/j

but, since ν^j is in F, this divides every element νⁱ^/jinto a cotient group of order j, so this can be rewritten as a radical extension of F, in the form:

k₁+(a₁+...)ν^1/j+...+(a_k+...)ν⁽^j-1)/j

where k_i, a_i are in F. I feel like this is a very straightforward technique for handwritten algebra, but i can't see a command for this on Maple 18. Nor the simplify(..., radicals) Or the combine(...,radicals) seems to help here. Maybe there's an special command for this? Must i do it myself? Please, any help is aprecciated.

"unable to compute solution for t>HFloat(0.0):" Ho...

Asked by: 666 jvbasha 130

November 17 2022

0 6

Hi maple users

I am working with the PDE solver.

i am receiving a following error

"unable to compute solution for t>HFloat(0.0):"

Kindly do the needful how to rectify this error.

dumm.mw

Extracting matrix of 208x2...

Asked by: ijuptilk 85

October 13 2022

0 2

Please how can I use getdata to extract only 200x2 of 208x2 matrix from maple to excel.

For instance I have:

Q:= ( seq( seq( plottools:-getdata(ans1[s1,3])[j,3],j=1..3), s1=1));

It returns 208x2, 200x2 200x2 matrices and I can't extract it using

`<|>`( seq( seq( plottools:-getdata(ans1[s1,3])[j,3],j=1..3), s1=1));

because the matrices have different dimension. Please, how can make 208x2 matrix to 200x2?

Contour with different colors such the region abov...

Asked by: ijuptilk 85

September 20 2022

1 0

I want to change the colors of a contour such that the region above zero is represented by a different color instead of yellow color, and that the colors for conts <0 are one set of colors (maybe yellow to red), and the area for which conts >0 is one color which is very different from the others (so maybe white).

Case4Contour.mw

Bifurcation of SEIR...

Asked by: ijuptilk 85

July 13 2022

0 2

Hi,

Please can someone help me with a sample code for bifurcation? You can use parameter values for the parameters. I'm using maple 18. Below is my model:

>

restart:

>	f__1 := Delta -(psi + mu)*S(t);

(1)

>	f__2 := psiS(t) -(delta + mu)E(t);

(2)

>	f__3 := DeltaE(t) -(gamma+gamma__1 + mu)X(t);

(3)

>	f__4 := gamma__1X(t)-(eta + xi + mu)H(t);

(4)

>	f__5 := xiH(t) - muR(t);

(5)

>	f__6 := gammaX(t)-etaH(t) - d*D(t);

(6)

>	f__7 := bD(t) - bB(t);

(7)

>	f__8 := phi__p + sigmaX(t)+eta__1H(t) +d__1D(t)+ b__1B(t) - alpha*P(t);

(8)

Download Bifurcation.mw

PDETools:-pdsolve other solutions...

Asked by: Chorux 60

July 08 2022

1 1

Given a set (list) of PDE, is there a way to search all possible solution sets? For instance, pdsolve will output the solution

{_eta[0](t, x) = 0, _xi[t](t, x, u) = _C1, _xi[x](t, x, u) = _C2, eta[1](t, x) = 0}

for the list of PDEs below. But I am aware that there is another solution different from the above, is there way to seek these other solutions?

[alpha*u^2*(diff(eta[1](t, x), t))+alpha*u*(diff(_eta[0](t, x), t))-u*(diff(eta[1](t, x), t))-u*(diff(eta[1](t, x), x))+u*(diff(eta[1](t, x), x, x, t))-(diff(_eta[0](t, x), x))-(diff(_eta[0](t, x), t))+diff(_eta[0](t, x), x, x, t), -(diff(_xi[x](t, x, u), u, u, u)), -(diff(_xi[t](t, x, u), x))-(diff(_xi[t](t, x, u), t)), -(diff(_xi[t](t, x, u), x, x)), -2*(diff(_xi[t](t, x, u), x, x))-(diff(_xi[x](t, x, u), x, x))+2*(diff(eta[1](t, x), x)), diff(eta[1](t, x), t)-2*(diff(_xi[x](t, x, u), x, x)), -(diff(_xi[x](t, x, u), t))*alpha*u-(diff(_xi[x](t, x, u), x, x, x))-(diff(_xi[t](t, x, u), x))+2*(diff(eta[1](t, x), x, t)), -(diff(_xi[x](t, x, u), x)), -(diff(_xi[t](t, x, u), t))*alpha*u+(diff(_xi[t](t, x, u), x))*alpha*u+(diff(_xi[x](t, x, u), x))*alpha*u+(diff(_xi[x](t, x, u), t))*alpha*u+eta[1](t, x)*alpha*u+alpha*_eta[0](t, x)+diff(_xi[t](t, x, u), t)-(diff(_xi[t](t, x, u), x, x, x))-(diff(_xi[x](t, x, u), x))-(diff(_xi[x](t, x, u), t))+diff(eta[1](t, x), x, x), -2*(diff(_xi[x](t, x, u), u)), -2*(diff(_xi[t](t, x, u), x, u)), -2*(diff(_xi[t](t, x, u), u))-(diff(_xi[x](t, x, u), u)), -(diff(_xi[t](t, x, u), u)), -(diff(_xi[t](t, x, u), u)), -5*(diff(_xi[x](t, x, u), u, u)), -(diff(_xi[t](t, x, u), u, u)), -3*(diff(_xi[t](t, x, u), x, u)), -2*(diff(_xi[x](t, x, u), u)), -(diff(_xi[t](t, x, u), u)), -(diff(_xi[t](t, x, u), u)), -2*(diff(_xi[t](t, x, u), u, u))-(diff(_xi[x](t, x, u), u, u)), -(diff(_xi[t](t, x, u), u, u, u)), -3*(diff(_xi[t](t, x, u), u, u)), -3*(diff(_xi[t](t, x, u), x, u, u)), (diff(_xi[t](t, x, u), u))*alpha*u-(diff(_xi[x](t, x, u), u))-3*(diff(_xi[t](t, x, u), x, x, u)), -2*(diff(_xi[x](t, x, u), x, u))-4*(diff(_xi[t](t, x, u), x, u)), -(diff(_xi[t](t, x, u), u))*alpha*u+(diff(_xi[x](t, x, u), u))*alpha*u+diff(_xi[t](t, x, u), u)-(diff(_xi[x](t, x, u), u)), -3*(diff(_xi[x](t, x, u), x, x, u))-(diff(_xi[t](t, x, u), u)), -7*(diff(_xi[x](t, x, u), x, u)), -3*(diff(_xi[x](t, x, u), x, u, u))]

recursive differentiation...

Asked by: Chorux 60

April 25 2022

2 1

I am trying to develop a recursive code to the above equations. Note, U,X&Y are multivariate functions (in this case bivariate functions of (x,y)) i.e. U=U(x,y), X=X(x,y) etc.

Is our substitution is Ok...

Asked by: bashar27 55

April 08 2022

0 0

restart;
u := (H(x, t, z)+sqrt(R))*exp(I*R*x);
/ (1/2)\
\H(x, t, z) + R / exp(I R x)

I*(Diff(u, z))+Diff(u, `$`(x, 2))+Diff(u, `$`(t, 2))+(abs(u)*abs(u))*u-((abs(u)*abs(u))*abs(u)*abs(u))*u;
/ d // (1/2)\ \\
I |--- \\H(x, t, z) + R / exp(I R x)/|
\ dz /

/ 2 \
|d // (1/2)\ \|
+ |-- \\H(x, t, z) + R / exp(I R x)/|
\ /

/ 2 \
|d // (1/2)\ \| 2
+ |-- \\H(x, t, z) + R / exp(I R x)/| + (exp(-Im(R x)))
\ /

2
| (1/2)| / (1/2)\
|H(x, t, z) + R | \H(x, t, z) + R / exp(I R x) -

4
4 | (1/2)| / (1/2)\
(exp(-Im(R x))) |H(x, t, z) + R | \H(x, t, z) + R /

exp(I R x)
value(%);
/ d \ / d / d \\
I |--- H(x, t, z)| exp(I R x) + |--- |--- H(x, t, z)|| exp(I R x)
\ dz / \ dx \ dx //

/ d \
+ 2 I |--- H(x, t, z)| R exp(I R x)
\ dx /

/ (1/2)\ 2
- \H(x, t, z) + R / R exp(I R x)

/ d / d \\ 2
+ |--- |--- H(x, t, z)|| exp(I R x) + (exp(-Im(R x)))
\ dt \ dt //

2
| (1/2)| / (1/2)\
|H(x, t, z) + R | \H(x, t, z) + R / exp(I R x) -

4
4 | (1/2)| / (1/2)\
(exp(-Im(R x))) |H(x, t, z) + R | \H(x, t, z) + R /

exp(I R x)
simplify(%);
/ d \ / d / d \\
I |--- H(x, t, z)| exp(I R x) + |--- |--- H(x, t, z)|| exp(I R x)
\ dz / \ dx \ dx //

/ d \ 2
+ 2 I |--- H(x, t, z)| R exp(I R x) - R exp(I R x) H(x, t, z)
\ dx /

(5/2) / d / d \\
- R exp(I R x) + |--- |--- H(x, t, z)|| exp(I R x)
\ dt \ dt //

2
| (1/2)|
+ exp(-2 Im(R x) + I R x) |H(x, t, z) + R | H(x, t, z)

2
| (1/2)| (1/2)
+ exp(-2 Im(R x) + I R x) |H(x, t, z) + R | R

4
| (1/2)|
- exp(-4 Im(R x) + I R x) |H(x, t, z) + R | H(x, t, z)

/ d \ / d / d \\
+ I |--- H(x, t, z)| + |--- |--- H(x, t, z)||
\ dz / \ dx \ dx //

/ d / d \\\
+ |--- |--- H(x, t, z)||| exp(I R x)
\ dt \ dt ///

2
| (1/2)|
+ exp(-2 Im(R x) + I R x) |H(x, t, z) + R | H(x, t, z)

2
| (1/2)| (1/2)
+ exp(-2 Im(R x) + I R x) |H(x, t, z) + R | R

4
| (1/2)|
- exp(-4 Im(R x) + I R x) |H(x, t, z) + R | H(x, t, z)

4
| (1/2)| (1/2)
- exp(-4 Im(R x) + I R x) |H(x, t, z) + R | R

Error during integration...

Asked by: Don_Caraota 130

February 08 2022

2 5

I was computing an integral (Running Maple 18 on Windows 10):

The classic lenght of arc Integral of sqrt(1+(dy/dx)^2) dx

In this case, the function was a cartesian circle (x-R)^2+y^2=R^2 isolated as y=sqrt(R^2-(x-R)^2)

When I do the integration, the result of the integral is not correct.
But if I change R for a, the result is correct. Why? This does not make any sense.

R wasn't assigned to any variable. The code was:

Good Integral

[>y:=expand(sqrt(a^2-(x-a)^2));
[>f:=expand(simplify(sqrt(1+diff(y,x)^2)));
[>S:=int(f,x)+K;

Wrong Integral

[>y:=expand(sqrt(R^2-(x-R)^2));
[>f:=expand(simplify(sqrt(1+diff(y,x)^2)));
[>S:=int(f,x)+K;

In fact, any UPPERCASE letter used as the radius gives me the wrong answer whereas any LOWERCASE letter gives me the proper result. Why is this?

Thanks and have a nice day
EDIT: I added a Screenshot

How to perform this kind of integrals?...

Asked by: Karch25 40

September 06 2021

2 1

Hello!

I am trying to integrate this function numerically from x=0... 1, by using int and evalf(Int) but maple cannot handle it. Is there another kind of numerical integration?

(2*x-1)^2*(2*n+(5*(2*x-1))*(x-1))*(2*n-5+5*x)*ln(1-(5*(1-x))*x/n)/((1-x)^2*(-2*n-(15*(1-x))*x))

Are there another kind of procedures to do numerical integration?

how can maple be used for Heyting Algebra...

Asked by: kerria 5

August 24 2021

1 0

Bellissima used kripky modules to find the labels for one and two generators. the number of these labels increses to a very large number as we add another level. Can maple help count these lables? and how?

How to solve this PDE equation...

Asked by: 666 jvbasha 130

April 29 2021

2 0

Dear maple users

Greetings.

I hope you are all fine.

In this code, I am solving the PDEs via pdsolve with numeric.

There is some mistake in the boundary condition and pdsolve.

Kindly help me that to get the solution for this PDE.

Waiting for your reply.

In this problem h(z) is piecewise

Bc:

code:JVB.mw

Note: z=0.5:

Optimal control problem - Minimizing variable as f...

Asked by: dtn 15

April 27 2021

1 2

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