Maple 2025 Questions and Posts

These are Posts and Questions associated with the product, Maple 2025

Using Maple 2025.2, I need to run my test in command line (for other reasons).

Only problem is that plottools:-exportplot does not work as well as in the GUI.  The gridlines do not show.

I reported this to Maplesoft years ago. Was hoping may be it is fixed in Maple 2025.2 but it does not seem to be.

Anyone knows of a trick to show gridlines in plot (2D) when using cmaple.exe?

Here is example. Started cmaple.exe from command line (which on windows is 

c:/Program Files/Maple 2025/bin.X86_64_WINDOWS/cmaple.exe
> p:=plot(x^3, x = -8 .. 8, color = "blue",axis=[gridlines=[10,color="red"]]):
> plottools:-exportplot("filename2.png",p);

You might want to use setdirectory() to some folder such as c:\tmp to save the plot to.

But the plot is missing the gridlines

In the UI it looks like this

 

This is really a big problem for me. I have to run the program in command line, but the plots geneated from command line do not look as good as when running the same program in maplew.exe vs. cmaple.exe.

This is a problem in Maple for years and years and no one in Maplesoft seems to care to fix it.

So I am asking hoping someone will have a trick to make gridline show using cmaple.exe.

I am trying to see if installing Physics update package will fix a problem I am having as described here by having a fix that maybe not included in Maple 2025.2

But I do not know how to do that. When doing Physics:-Version(); or Physics:-Version(latest); Maple says

             `The "Physics Updates" package is not available for the version of Maple under development`

Does this mean Physics update package is not needed in Maple 2025.2?  Otherwise, what are the instructions to install Physics package now?

May be someone could clarify the status of Physics package and if it is something that one should still install along with SupportTools which in Maple 2025.2 was there automatically and did not need to install it.

Update 

JUst verified that Physics update package V 1881 is still needed in Maple 2025.2 as it has important fixes not merged in Maple 2025.2.

To install Physics package in Maple 2025.2 had to click on the top right corner of the worksheet (the down arrow) near the "sign in".

Then go down to "packages" and select and click on the install button next to Physics package.  (first in list).

This will download and install it.

Now closed all of Maple and restarted it.

Now Physics package V 1881 is installed and have fixes in it that are missing from Maple 2025.2.  This is why my test was failing. Now the test do not fail.

So first time, the command Physics:-Version(latest) does not work. But from now on it should work.

I would have expected all fixes made in Physics update to have been merged into the new Maple release.

In 2025.2, I found that calling Physics:-Setup causes code of `convert/diff` to change (on the fly) causing error.

I removed from my code the places I was calling Physics:-Setup explicitly, but the error still shows up. Which means there is still places in the code to cause Physics to come into play.

I just installed 2025.2 and have not done anything yet. Just running a test. 

Does one need to install Physics package?

First, let me give an example showing that calling Physics:-Setup changes `convert/diff` which ends up causing an internal Maple error

interface(version);

`Standard Worksheet Interface, Maple 2025.2, Windows 10, November 11 2025 Build ID 1971053`

SupportTools:-Version();

`The Customer Support Updates version in the MapleCloud is 29 and is the same as the version installed in this computer, created June 23, 2025, 10:25 hours Eastern Time.`

Physics:-Version();

`The "Physics Updates" package is not available for the version of Maple under development`

restart;

Original result. No problem

 

print(`convert/diff`);

proc (a, { useeval::truefalse := false }) local ee, zD; ee := `PDEtools/usediff`(a); zD := indets(ee, 'And(function, satisfies(proc (f) options operator, arrow; (op(0, f))::`PDEtools/D/structure` end proc))'); if zD = {} then ee else _Env_t_in_use := `tools/get_symbols`(a); if useeval then zD := map(`convert/diff/D_to_eval@diff`, zD, ':-useEval'); zD := map(proc (u) options operator, arrow; lhs(u) = subsop(0 = eval, rhs(u)) end proc, zD); subs(zD, ee) else subs(map(`convert/diff/D_to_eval@diff`, zD), a) end if end if end proc

T:=D(x)(infinity):

PDEtools:-difforder(convert(T,diff))

1

 

 

 

After call Physics:-Setup

 

restart;

Physics:-Setup('assumingusesAssume' = false):

print(`convert/diff`);

proc () local ans; ans := usepdiff(args); if has([ans], 'D') then ans := Physics:-OriginalValue["convert/diff"](ans, args[2 .. -1]) end if; ans end proc

T:=D(x)(infinity):

PDEtools:-difforder(convert(T,diff))

Error, (in unknown) invalid input: diff received infinity, which is not valid for its 2nd argument

 

 

 

 

Download why_code_changes_calling_Physics_maple_2025_2_nov_24_2025.mw

Notice that now calling PDEtools:-difforder(convert(T,diff))  fail because Physics:- was called.

But my code now has no calls to Physics:-, I made sure to comment all those out. 

But I still get same error when I run my test program. Not able to find where Physics is "activated" again to cause the code change in `convert/diff` that happens dynamically when Physics is loaded.

It must be happining on different call internally. But have no idea why and where.

This is all on new PC. I have no Maple ini files or anything like this that can cause this.

Will installing Physics package explicity fixes this?   

 

Update

I think I know why this happens. Not all fixes made by Edgardo S. Cheb-Terrab in last Physics update are included in Maple 2025.2 !

See https://mapleprimes.com/questions/240843-Why-PDEtoolsSolve-Fail-On-This-Equation  where fix is made in Physics  v.1880 which I confirmed in Maple 2025.1.

But now I checked and this problem is back in Maple 2025.2. which means that fix was not merged into Maple 2025.2. How could this happen?


 

interface(version);

`Standard Worksheet Interface, Maple 2025.2, Windows 10, November 11 2025 Build ID 1971053`

Physics:-Version();

`The "Physics Updates" package is not available for the version of Maple under development`

SupportTools:-Version();

`The Customer Support Updates version in the MapleCloud is 29 and is the same as the version installed in this computer, created June 23, 2025, 10:25 hours Eastern Time.`

restart;

eq:=D(y)(0)+1 = 0;
solve(eq,D(y)(0));

(D(y))(0)+1 = 0

-1

PDEtools:-Solve(eq,D(y)(0));

Error, (in PDEtools:-Solve) required an indication of the solving variables for the given system

 


 

Download fixed_in_2025_1_but_missing_in_2025_2.mw

So I am hoping that figuring how to install Physics update in Maple 2025.2 will fix the current problem with convert and also bring that old fix for PDEtools:-Solve back into Maple 2025.2.

This is something that Maplesoft should have taken care of.

Update 

Figured how install Physics update package V 1881 and doing so fixed this problem in Maple 2025.2 !

This tells me that all fixes that were in Physics update package were not merged into Maple 2025.2

This worksheet shows that now code works OK, but need to make sure to install Physics update package in Maple 2025.2

interface(version);

`Standard Worksheet Interface, Maple 2025.2, Windows 10, November 11 2025 Build ID 1971053`

SupportTools:-Version();

`The Customer Support Updates version in the MapleCloud is 29 and is the same as the version installed in this computer, created June 23, 2025, 10:25 hours Eastern Time.`

Physics:-Version();

`The "Physics Updates" version in the MapleCloud is 1881 and is the same as the version installed in this computer, created 2025, October 7, 16:4 hours Pacific Time.`

restart;

Original result. No problem

 

print(`convert/diff`);

proc (a, { useeval::truefalse := false }) local ee, zD; ee := `PDEtools/usediff`(a); zD := indets(ee, 'And(function, satisfies(proc (f) options operator, arrow; (op(0, f))::`PDEtools/D/structure` end proc))'); if zD = {} then ee else _Env_t_in_use := `tools/get_symbols`(a); if useeval then zD := map(`convert/diff/D_to_eval@diff`, zD, ':-useEval'); zD := map(proc (u) options operator, arrow; lhs(u) = subsop(0 = eval, rhs(u)) end proc, zD); subs(zD, ee) else subs(map(`convert/diff/D_to_eval@diff`, zD), a) end if end if end proc

T:=D(x)(infinity):

PDEtools:-difforder(convert(T,diff))

1

 

 

 

After call Physics:-Setup. now works OK since Physics update is installed

 

restart;

Physics:-Setup('assumingusesAssume' = false):

print(`convert/diff`);

proc () local ans; ans := usepdiff(args); if has([ans], 'D') then ans := Physics:-OriginalValue["convert/diff"](ans, args[2 .. -1]) end if; ans end proc

T:=D(x)(infinity):

PDEtools:-difforder(convert(T,diff))

1

 

 

 

Download why_code_changes_calling_Physics_maple_2025_2_nov_24_2025_V2.mw

 

The new default in Maple 2025 is to hide the Execution Group Boundaries in Worksheet mode.
In order to make them visible one has to use the menu

View > Show/Hide Contents > Execution Group Boundaries F9

or to press the F9 key.

The question: is there a method to have again visible boundaries by default? 

(Hiding the boundaries does not seem to be a good idea because an execution group can have (it is not clear why!) multiple prompts.)

Is it possible to install and operate Maple toolbox 2025.2 with MATLAB R2025b on Linux (Ubuntu 24.04)  platform?

On Ubuntu 24.04 installation process hangs after location of Maple and Matlab folders at installer window.

Any idea what is wrong?

Of course, I know that actual Maple 2025 system requirements mention support only for MATLAB R2024b, but this is an obsolete version of MATLAB.

And finally, Is there any reliable and effective way how to switch between Maple and MATLAB symbolic engine?

My maple version is 2025.2 and is extremely slow when typing. If i type fast then half a second goes by and the text appears. My pc has quite decent specs so limited performance is likely not the issue.

Having started learning Maple about a year ago as a beginner, and now having mastered my preferred area of ​​"ordinary differential equations" fairly independently, I'd like to explore "elliptic curves" in Maple. For practice, I've chosen two problems, for each of which I only know one solution:

y^2 = x^3  -51*x^2 + 867*x - 4792    (17;11)

y^2 - 2*y + 14 = 2*x^3 + 11*x^2 - 29*x - 17    (3;7)

My attempts using commands like "algcurves", "ThueSolve", and "parametrization" have failed. How does one approach such problems in Maple? I'm also particularly interested in the group-theoretically based graphical secant method.

(I'm familiar with the book by Silverman/Tate.)

I get this message:

Why is it not working using the menu?

We have just released updates to Maple and MapleSim.

Maple 2025.2 improvements include fixes to print layout, PDF export, tooltips for keyboard shortcuts, Plot Builder, and more. We recommend that all Maple 2025 users install this update. This update is available through Tools>Check for Updates in Maple, and is also available from the Maple 2025.2 download page, where you can find more details.

At the same time, we have also released an update to MapleSim, which includes enhanced tools for comparing models and analyzing simulation data, and improved runtime performance for MapleSim connectors.You can find more information on the MapleSim 2025.2 download page.

When working with units in Maple, There seem to be a glitch. Can someone explain, where there might be a mistake here: Sorry for the language, but You will hopefully understand.

In the attached document (an excerpt from a larger document) is a call to the interactive plotbuilder.
The call is somewhere hidden in a document block but the document block with the redline is empty. Deleting the document block only moves the red line to another block. 

Executing the entire document (with !!!) starts the plot builder, execution step by step (with !) does not.

How to delete the call to the plotbuilder?

Interactive_plotbuilder.mw

I am working in Maple 2025:

I executed the following code:

restart:
p:=int(x ** 3 + 2 * x, x);

Maple replied with:

(x^2 + 2)^2/4

I was expecting :

x^4/4+x^2

Did Maple do this integration incorrectly?

Hello! I have a simple system of linear ODEs and I am trying to solve them much like the above link ODEs were solved but I keep getting a pesky problem and no matter what I do, I can't seem to make Maple happy! Could someone take a look & see what I am doing wrong.

Thank you.

Download SimpleMarsEntryAndAeroBrakingModel.mw

Dear sir here not matching the table values in the given pdf and if the Bc ((D(D(f)))(1) = 0) is also not satisfying 

thin_film_base_paper_comparision.mw

restart;
with(PDEtools):
with(plots):
with(LinearAlgebra):

A1 := 1:

# A2: Density coefficient
A2 := 1:

# A3: Thermal conductivity coefficient (Maxwell model)
A3 := 1:

# A4: Heat capacity coefficient  
A4 := 1:

# A5: Electrical conductivity coefficient (Maxwell model)
A5 := 1:
 

 

# Default parameter values (can be varied in studies)
M := 0:               # Magnetic field parameter
               # Unsteadiness parameter  
lambda_val := 0.5:      # Film thickness parameter (β²)
R := 0:               # Radiation parameter
A_star := 0.5:          # Heat source parameter
B_star := 0.5:          # Heat sink parameter
Ec := 0:              # Eckert number
Pr := 1:            # Prandtl number

OdeSys := A1 * diff(f(eta), eta, eta, eta) +
                     A2 * lambda_val * (f(eta) * diff(f(eta), eta, eta) -
                     diff(f(eta), eta)^2 - S * diff(f(eta), eta) -
                     (S * eta/2) * diff(f(eta), eta, eta)) -
                     M * A5 * diff(f(eta), eta) = 0,(A3 + (4/3)*R) * diff(theta(eta), eta, eta) -
                   Pr * A4 * lambda_val * ((S/2) * (3*theta(eta) + eta*diff(theta(eta), eta)) +
                   2*diff(f(eta), eta)*theta(eta) - f(eta)*diff(theta(eta), eta)) +
                   lambda_val * (B_star * theta(eta) + A_star * diff(f(eta), eta)) = 0;

diff(diff(diff(f(eta), eta), eta), eta)+.5*f(eta)*(diff(diff(f(eta), eta), eta))-.5*(diff(f(eta), eta))^2-.5*S*(diff(f(eta), eta))-.2500000000*S*eta*(diff(diff(f(eta), eta), eta)) = 0, diff(diff(theta(eta), eta), eta)-.2500000000*S*(3*theta(eta)+eta*(diff(theta(eta), eta)))-1.0*(diff(f(eta), eta))*theta(eta)+.5*f(eta)*(diff(theta(eta), eta))+.25*theta(eta)+.25*(diff(f(eta), eta)) = 0

(1)

 

# Boundary conditions
    Cond :=f(0) = 0, D(f)(0) = 1, theta(0) = 1, f(1) = S/2,  D(theta)(1) = 0:
#(D(D(f)))(1) = 0:

SVals := [1, 1.2, 1.4, 1.6,1.8]:



for j to numelems(SVals) do
  
        Ans[j] := dsolve(eval([OdeSys, Cond], S = SVals[j]), numeric,
                         output = listprocedure):
end do:
       

interface(rtablesize = 100); interface(displayprecision = 6); Matrix([[Y, Nu, Nu, Nu, Nu, Nu], seq([k, seq([-(eval(diff(theta(eta), eta), Ans[j]))(k)][], j = 1 .. numelems(SVals))], k = 0)]); interface(rtablesize = 10); interface(displayprecision = -1)

Matrix(%id = 36893490264274272116)

(2)
 

 

Download thin_film_base_paper_comparision.mw
fin_base_paper.pdf

Why are characters printed with additional back ticks when decimal HTML code is used (see output (3) below). lprint((3)) does not print them.

Looks like an exception. Is there a reason for that? Can it be used for something?

With HTML entitiy

`‰`

`‰`

(1)

With HTML hex code

`‰`

`‰`

(2)

With HTML decimal code

`‰`

`‰`

(3)
 

 

Download back_ticks_with_decimal_code.mw

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