Advanced Search

Unanswered Questions

This page lists MaplePrimes questions that have not yet received an answer
Unanswered Questions Feed

Slider Plot and Value Substitution Help...

Asked by: Andiguys 65
parameters explore plotting
April 29 2025
0  4

I need to create a slider plot for A10, A11, and A12 by varying the parameters theta, Pu, and a.
I have a syntax ready — could you suggest modifications to make it work correctly and generate the plot?

Additionally, is it possible to compute the values of A13 and A14 by substituting the obtained A10, A11, and A12 values for each combination of theta, Pu, and a from the slider plot?

Sheet attached: Slider_Q.mw

Compute integral exactly ...

Asked by: Zeineb 540
integration
April 27 2025
0  0

Dear all 
I have a double integral, i want to compute this integral and verify if the pproposed solution verify the proposed equation or not. 
I can modify the right hand side of my equation or the exact solution, so that my equation has an exact solution with simple form of right hand side. 

exact_solution.mw

Thank you for your help 

Using Maple to factor cryptographically secure int...

Asked by: jwaltos 10
cryptography
April 27 2025
0  3

L.B.J. once said: “There are no problems we cannot solve together, and very few we can solve by ourselves.”

I've used Maple since the mid 90's when I found a Maple book with a working floppy disk containing V2, Student version in the UWaterloo Library. There was a version of Maple which stated that "you harnessed the power of ten thousand mathematicians" to which the initial quote applies.

The Certicom Challenge is still extant with prizes but the RSA Challenge has since been deprecated. General integer factorization seems to exist within a complexity class that is neither P nor NP. The following two values are associated with RSA-230 and RSA-232 and can be used to factor each of them simply and swiftly within an algebraic context:

4492372899485266683229032112393311539091890452003150017722229708882931615085372733373343061967162688807713966063216561545461119244883848142568154156987418243095913219694108294875951005535802313105656690937568115044857082104972025

252470349467980886727391223577367145704558455488893488785280129051457755334632136343591527439288590916228345021238946062776419447984711784388150390053253805338284074179548687684017542311453314919778156125323310987123004623216624367

These two values are very specific examples of a general solution structure and I have not yet seen anything written on this topic that I can recognize. If someone knows how to use these two values appropriately then please provide the solution context, otherwise, I shall revisit this post in the near future and provide the required equations.

This is my second post on this topic as I was notified that my initial post was deleted by a moderator. Hopefully this post passes through the gauntlet.

Mathematica's review of Maple 2024...

Asked by: Christopher2222 5965
mathematica
April 26 2025
1  7

I came across a review of Maple 2024 comparison to Mathematica.https://www.wolfram.com/mathematica/compare-mathematica/files/Maple2024Review.pdf

Sure there may have been some minor additions to Maple that were already available in Mathematica, but I feel they've taken a lot of it and morphed it into something that isn't quite right. 

How do I rescale an equation without resizing the ...

Asked by: philroe 10
latex
April 26 2025
0  1

I need to insert an equation featuring a 4x4 matrix whose entries are smallish polynomials. To fit this onto the page, I found out that I could place 

\newcommand\scalemath[2]{\scalebox{#1}{\mbox{\ensuremath{\displaystyle #2}}}} 
in the preamble, and then wrap it around the math environment. It works beautifully, except for one small problem. Wrapping it around \begin{equation}    \end{equation} it also scales the number of the equation. Is there an easy fix?

How do I measure the forces in the cable?...

Asked by: ZnMnCr 15
force
April 26 2025
2  6

When I measure the summary_Tension of the cable directly, the force of the cable suspending the weight is always somewhat different from the gravity of the weight. I'm not sure what summary_Tension a and b stand for and why they differ from the gravity force? I set the acceleration of gravity, g, to 10. m =1kg

Some questions about MapleCloud ...

Asked by: C_R 3302
browser gui
April 24 2025
0  2

MapleCloud opend from Maple2025 and 2024.

Has this extended scrollbar always been like this?
Maybe it is a browser thing.
Which browser is Maple using?
Are there any settings I could adjust?

Discontinuities in branch cuts....

Asked by: Christian Wolinski 1650
discontinuity functionadvisor
April 20 2025
0  1

When using FunctionAdvisor(branch_cuts, f(x), plot="2D"); how do I enforce discontinuous lines be presented with option discont=true?

How i can find the parameter in PDE ?...

Asked by: salim-barzani 1395
parameters substitution pde
April 19 2025
3  6

How i can get this special parameter i try to do substitution in another mw file but stilli can't reach this parameter and without this parameter my PDE is not give me zero so i have to find this r[i] parameter, some letter of my mw file are not similar to paper but r[i]=l[i] as mention is paper al clear and i found all structure just this remain, i am looking for equation (14), thanks for any help 

> 

restart
> 

with(PDEtools)
> 

with(LinearAlgebra)
> 

NULL
> 

with(SolveTools)
> 

_local(gamma)

Warning, A new binding for the name `gamma` has been created. The global instance of this name is still accessible using the :- prefix, :-`gamma`.  See ?protect for details.

  
> 

NULL
> 

declare(u(x, y, z, t))

u(x, y, z, t)*`will now be displayed as`*u

 (1)
> 

declare(f(x, y, z, t))

f(x, y, z, t)*`will now be displayed as`*f

 (2)
> 

pde1 := a*(diff(u(x, y, z, t), x, t))-((a^4-6*a^2*b^2+b^4)*(1/16))*(diff(u(x, y, z, t), `$`(x, 4)))-(1/4)*(3*(-a^2+b^2))*(diff(u(x, y, z, t)^2, `$`(x, 2)))+alpha*(diff(u(x, y, z, t), `$`(x, 2)))+beta*(diff(u(x, y, z, t), x, y))+delta*(diff(u(x, y, z, t), x, z))+lambda*(diff(u(x, y, z, t), `$`(z, 2)))+mu*(diff(u(x, y, z, t), y, z))+mu^2*(diff(u(x, y, z, t), `$`(y, 2)))/(4*lambda)

a*(diff(diff(u(x, y, z, t), t), x))-(1/16)*(a^4-6*a^2*b^2+b^4)*(diff(diff(diff(diff(u(x, y, z, t), x), x), x), x))-(3/4)*(-a^2+b^2)*(2*(diff(u(x, y, z, t), x))^2+2*u(x, y, z, t)*(diff(diff(u(x, y, z, t), x), x)))+alpha*(diff(diff(u(x, y, z, t), x), x))+beta*(diff(diff(u(x, y, z, t), x), y))+delta*(diff(diff(u(x, y, z, t), x), z))+lambda*(diff(diff(u(x, y, z, t), z), z))+mu*(diff(diff(u(x, y, z, t), y), z))+(1/4)*mu^2*(diff(diff(u(x, y, z, t), y), y))/lambda

 (3)
> 

Tr := {beta = alpha, delta = alpha, mu = 2*lambda}

{beta = alpha, delta = alpha, mu = 2*lambda}

 (4)
> 

pde := subs(Tr, pde1)

a*(diff(diff(u(x, y, z, t), t), x))-(1/16)*(a^4-6*a^2*b^2+b^4)*(diff(diff(diff(diff(u(x, y, z, t), x), x), x), x))-(3/4)*(-a^2+b^2)*(2*(diff(u(x, y, z, t), x))^2+2*u(x, y, z, t)*(diff(diff(u(x, y, z, t), x), x)))+alpha*(diff(diff(u(x, y, z, t), x), x))+alpha*(diff(diff(u(x, y, z, t), x), y))+alpha*(diff(diff(u(x, y, z, t), x), z))+lambda*(diff(diff(u(x, y, z, t), z), z))+2*lambda*(diff(diff(u(x, y, z, t), y), z))+lambda*(diff(diff(u(x, y, z, t), y), y))

 (5)
> 

pde_linear, pde_nonlinear := selectremove(proc (term) options operator, arrow; not has((eval(term, u(x, y, z, t) = T*u(x, y, z, t)))/T, T) end proc, expand(pde))

a*(diff(diff(u(x, y, z, t), t), x))-(1/16)*(diff(diff(diff(diff(u(x, y, z, t), x), x), x), x))*a^4+(3/8)*(diff(diff(diff(diff(u(x, y, z, t), x), x), x), x))*a^2*b^2-(1/16)*(diff(diff(diff(diff(u(x, y, z, t), x), x), x), x))*b^4+alpha*(diff(diff(u(x, y, z, t), x), x))+alpha*(diff(diff(u(x, y, z, t), x), y))+alpha*(diff(diff(u(x, y, z, t), x), z))+lambda*(diff(diff(u(x, y, z, t), z), z))+2*lambda*(diff(diff(u(x, y, z, t), y), z))+lambda*(diff(diff(u(x, y, z, t), y), y)), (3/2)*(diff(u(x, y, z, t), x))^2*a^2-(3/2)*(diff(u(x, y, z, t), x))^2*b^2+(3/2)*u(x, y, z, t)*(diff(diff(u(x, y, z, t), x), x))*a^2-(3/2)*u(x, y, z, t)*(diff(diff(u(x, y, z, t), x), x))*b^2

 (6)
> 

NULL
> 

eq17 := u(x, y, z, t) = (-a^4+6*a^2*b^2-b^4)*((diff(diff(f(x, y, z, t), x), x))/f(x, y, z, t)-(diff(f(x, y, z, t), x))^2/f(x, y, z, t)^2)/(2*a^2-2*b^2)
> 

``NULL
> 

betai := k[i]*(t*w[i]+y*l[i]+z*r[i]+x)+eta[i]

k[i]*(t*w[i]+y*l[i]+z*r[i]+x)+eta[i]

 (7)
> 

W := w[i] = ((a^4-6*a^2*b^2+b^4)*k[i]^2-16*lambda*l[i]^2+(-32*lambda*r[i]-16*alpha)*l[i]-16*lambda*r[i]^2-16*alpha*r[i]-16*alpha)/(16*a)
> 

AA := A[12] = (16*(l[1]-l[2]+r[1]-r[2])^2*lambda+3*(k[1]-k[2])^2*(a^2+2*a*b-b^2)*(a^2-2*a*b-b^2))/(16*(l[1]-l[2]+r[1]-r[2])^2*lambda+3*(k[1]+k[2])^2*(a^2+2*a*b-b^2)*(a^2-2*a*b-b^2))
> 

F2 := 1+exp(beta[1])+A[1, 2]*exp(beta[1]+beta[2])+exp(beta[2])

1+exp(beta[1])+A[1, 2]*exp(beta[1]+beta[2])+exp(beta[2])

 (8)
> 

NULL
> 

F22 := f(x, y, z, t) = 1+exp((a^4*t*k[1]^3-6*a^2*b^2*t*k[1]^3+b^4*t*k[1]^3-16*lambda*t*k[1]*l[1]^2-32*lambda*t*k[1]*l[1]*r[1]-16*lambda*t*k[1]*r[1]^2+16*a*y*k[1]*l[1]+16*a*z*k[1]*r[1]-16*alpha*t*k[1]*l[1]-16*alpha*t*k[1]*r[1]+16*a*x*k[1]-16*alpha*t*k[1]+16*a*eta[1])/(16*a))+exp((a^4*t*k[2]^3-6*a^2*b^2*t*k[2]^3+b^4*t*k[2]^3-16*lambda*t*k[2]*l[2]^2-32*lambda*t*k[2]*l[2]*r[2]-16*lambda*t*k[2]*r[2]^2+16*a*y*k[2]*l[2]+16*a*z*k[2]*r[2]-16*alpha*t*k[2]*l[2]-16*alpha*t*k[2]*r[2]+16*a*x*k[2]-16*alpha*t*k[2]+16*a*eta[2])/(16*a))
> 

eq := eval(eq17, F22)

u(x, y, z, t) = (-a^4+6*a^2*b^2-b^4)*((k[1]^2*exp((1/16)*(a^4*t*k[1]^3-6*a^2*b^2*t*k[1]^3+b^4*t*k[1]^3-16*lambda*t*k[1]*l[1]^2-32*lambda*t*k[1]*l[1]*r[1]-16*lambda*t*k[1]*r[1]^2+16*a*y*k[1]*l[1]+16*a*z*k[1]*r[1]-16*alpha*t*k[1]*l[1]-16*alpha*t*k[1]*r[1]+16*a*x*k[1]-16*alpha*t*k[1]+16*a*eta[1])/a)+k[2]^2*exp((1/16)*(a^4*t*k[2]^3-6*a^2*b^2*t*k[2]^3+b^4*t*k[2]^3-16*lambda*t*k[2]*l[2]^2-32*lambda*t*k[2]*l[2]*r[2]-16*lambda*t*k[2]*r[2]^2+16*a*y*k[2]*l[2]+16*a*z*k[2]*r[2]-16*alpha*t*k[2]*l[2]-16*alpha*t*k[2]*r[2]+16*a*x*k[2]-16*alpha*t*k[2]+16*a*eta[2])/a))/(1+exp((1/16)*(a^4*t*k[1]^3-6*a^2*b^2*t*k[1]^3+b^4*t*k[1]^3-16*lambda*t*k[1]*l[1]^2-32*lambda*t*k[1]*l[1]*r[1]-16*lambda*t*k[1]*r[1]^2+16*a*y*k[1]*l[1]+16*a*z*k[1]*r[1]-16*alpha*t*k[1]*l[1]-16*alpha*t*k[1]*r[1]+16*a*x*k[1]-16*alpha*t*k[1]+16*a*eta[1])/a)+exp((1/16)*(a^4*t*k[2]^3-6*a^2*b^2*t*k[2]^3+b^4*t*k[2]^3-16*lambda*t*k[2]*l[2]^2-32*lambda*t*k[2]*l[2]*r[2]-16*lambda*t*k[2]*r[2]^2+16*a*y*k[2]*l[2]+16*a*z*k[2]*r[2]-16*alpha*t*k[2]*l[2]-16*alpha*t*k[2]*r[2]+16*a*x*k[2]-16*alpha*t*k[2]+16*a*eta[2])/a))-(k[1]*exp((1/16)*(a^4*t*k[1]^3-6*a^2*b^2*t*k[1]^3+b^4*t*k[1]^3-16*lambda*t*k[1]*l[1]^2-32*lambda*t*k[1]*l[1]*r[1]-16*lambda*t*k[1]*r[1]^2+16*a*y*k[1]*l[1]+16*a*z*k[1]*r[1]-16*alpha*t*k[1]*l[1]-16*alpha*t*k[1]*r[1]+16*a*x*k[1]-16*alpha*t*k[1]+16*a*eta[1])/a)+k[2]*exp((1/16)*(a^4*t*k[2]^3-6*a^2*b^2*t*k[2]^3+b^4*t*k[2]^3-16*lambda*t*k[2]*l[2]^2-32*lambda*t*k[2]*l[2]*r[2]-16*lambda*t*k[2]*r[2]^2+16*a*y*k[2]*l[2]+16*a*z*k[2]*r[2]-16*alpha*t*k[2]*l[2]-16*alpha*t*k[2]*r[2]+16*a*x*k[2]-16*alpha*t*k[2]+16*a*eta[2])/a))^2/(1+exp((1/16)*(a^4*t*k[1]^3-6*a^2*b^2*t*k[1]^3+b^4*t*k[1]^3-16*lambda*t*k[1]*l[1]^2-32*lambda*t*k[1]*l[1]*r[1]-16*lambda*t*k[1]*r[1]^2+16*a*y*k[1]*l[1]+16*a*z*k[1]*r[1]-16*alpha*t*k[1]*l[1]-16*alpha*t*k[1]*r[1]+16*a*x*k[1]-16*alpha*t*k[1]+16*a*eta[1])/a)+exp((1/16)*(a^4*t*k[2]^3-6*a^2*b^2*t*k[2]^3+b^4*t*k[2]^3-16*lambda*t*k[2]*l[2]^2-32*lambda*t*k[2]*l[2]*r[2]-16*lambda*t*k[2]*r[2]^2+16*a*y*k[2]*l[2]+16*a*z*k[2]*r[2]-16*alpha*t*k[2]*l[2]-16*alpha*t*k[2]*r[2]+16*a*x*k[2]-16*alpha*t*k[2]+16*a*eta[2])/a))^2)/(2*a^2-2*b^2)

 (9)
> 

pdetest(eq, pde)

Download fusion-undon.mw

Error, (in PatternMatching:-AlgStruct:-Match) stri...

Asked by: nm 11198
patmatch
April 19 2025
0  1

Encountered this error using patmatch with condition. I have changed my code since then  to avoid such cases.

But do you think this is valid error? It only happens when adding conditional. 

> 

interface(version);
> 

restart;
> 

RHS:=1/2/lambda(y)*f(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*a+1/2/lambda(y)*f(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*b-1/lambda(y)*f(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*y-1/2/lambda(y)^2*D(f)(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*a*b+1/2/lambda(y)^2*D(f)(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*a*y+1/2/lambda(y)^2*D(f)(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*b*y-1/2/lambda(y)^2*D(f)(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*y^2;

(1/2)*f(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*a/lambda(y)+(1/2)*f(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*b/lambda(y)-f(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*y/lambda(y)-(1/2)*(D(f))(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*a*b/lambda(y)^2+(1/2)*(D(f))(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*a*y/lambda(y)^2+(1/2)*(D(f))(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*b*y/lambda(y)^2-(1/2)*(D(f))(RootOf(f(_Z)*a*b-f(_Z)*a*y-f(_Z)*b*y+f(_Z)*y^2+lambda(y)^2))*y^2/lambda(y)^2

> 

patmatch(RHS,F::anything*lambda(y)^(n::anything)+H::anything,'la')

true

> 

patmatch(RHS,conditional(F::anything*lambda(y)^(n::anything)+H::anything, not (_has(H,lambda(y)) or _has(n,y))),'la')

Error, (in PatternMatching:-AlgStruct:-Match) string or symbol expected for substring

 

 

Download error_patmatch_april_18_2025.mw

how I can calculate the integral analytically?...

Asked by: NIMA112 35
integration syntax
April 18 2025
0  3

I have a problem calculating integral analytically.

Can anyone help me in this regard?

Thanks

problem_2_integral_&_moshtagh.mw

How to convert statements with comments in 2D-Math...

Asked by: C_R 3302
1dmath
April 17 2025
1  0

Occasionally I want to convert 2D-Math input to 1D-Math input. This is either not fully working with comments or changes the format. Example:

Try converting the input below to Maple 1D-Math (select -> right click -> 2D-Math -> convert to -> 1D-Math)

> 

statement

statement

 (1)

The*comment*dissapears:

> 

statement;

 

statement

 (2)

The Maple Input at the top can be converted by selecting the style C Maple Input from the edit tab but the font changes not to the default font for 1D Math-Input;

> 

statement

statement

 (3)

The above is in italic and not in bold. However the default for 1D-Math Input is the following

> 

statement

statement

 (4)

 

NULL

Also pasting code with comments in MaplePrimes (function insert code snippet) removes comments.

Any other ways? Ideally, I would also like to convert a whole document in one go, That is probably asked too much.

Download convert_comment_to_1D.mw

Why can't find critical point in all function...

Asked by: salim-barzani 1395
solve duplicate-question
April 16 2025
3  2

in try to figure out why in some function i can find this critical point for ploting i need that point , untill now i just find in one function and other i can't and my program not runing for other and really this is make problem for my invistigation i want to fixed that and i upload that file i did and that file i can't find it for , thanks for any help?

line-undone.mw

Line-1-Done.mw

where is Maple's help page for Abel second kin...

Asked by: nm 11198
ode differential-equations documentation
April 15 2025
3  1

I can't find the help page for Abel second kind, class B. 

Maple has help page for Abel second kind, class A and Abel second kind, class C. But not for class B. 

Here is an example of Abel second kind class B

ode:=(3*t*y(t)+y(t)^2)+(t^2+t*y(t))*diff(y(t),t)=0;
DEtools:-odeadvisor(ode)

I wanted to know the difference and the transformation used for class B to make it Abel first kind.

I googled and can't find it. Also local help skips over class B.

Is this documented somewhere else?

btw, find error on the help page for class A. Transformation used is wrong. Will leave this for another question.

Maple can do the work with physics of fluids?...

Asked by: salim-barzani 1395
differential-equations fluid-dynamics incomplete-question
April 15 2025
2  9

I'm not currently working on the topic of fluids and I'm not very familiar with it. However, my partner is working on it and is using other software. They have a question about whether Maple can handle this kind of work. Are there any examples available? I’d appreciate any help

thanks!

1 2 3 4 5 6 7 Last Page 2 of 359