Unanswered Questions

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

I was searching release notes for some old Maple versions. I found so many broken links on Maple web pages. The first page is https://www.maplesoft.com/products/maple/history/ 

Scrolling down, and starting from Maple 2016 (about half way down the page), all links to the "product press release" are broken. This is the link to the right of each product.  All these links on the right, from 2016 to the end of the page are broken,

Clicking on any of these, sends the user to new broken web page, called https://www.maplesoft.com/company/publications/  titled "Maplesoft media coverage".

This page does not even work. Clicking on "Jump to year" does not open. Clicking in "first page" does nothing. Tried Edge browser on windows 10, also the page does nothing. 

Then I clicked on Maplesoft Media Releases link at top, and now it works.

But jumping to any year before  2016, all the links that show on those pages are broken. Try and see,

For example. jumping to 2015, and clicking on release called "

November 25, 2015"

Gives

This applies to each press release for each year from 2015 to 1997.

Hundreds of links are broken.

There is software which checks broken links, and it is free for windows, called Xenu's Link Sleuth. May be someone at Maplesoft can use it to find all broken links at Maplesoft web site and fix them?

It is not acceptable in this day and age to have a Major software company with a web site full of broken links.

I wanted to trick odetest and see what it does. I gave it solution to ode with IC. The solution was in form of implicit solution.

odetest verified it.

Then I solved for y(x) from the implicit solution and passed each now explicit solution to odetest, now it does not verify either one. (two explicit solutions resulted)

I would have thought that odetest to not verify the implicit solution as well. Is this a bug or an expected behavior when using implicit?

Does this mean, to be safe, one should try to solve for y(x) explicitly before using odetest? But sometimes this can be expensive or not possible nor practical to do as implicit solution can be complicated to solve for y(x).

Maple 2025.2 on windows 10.

Firewall now suddently will not let me upload a worksheet again for some reason. Firewall did not have a problem yesterday, but today it complained.

So here code and screen shot

restart;
ode:=2*y(x) + 2*x*y(x)^2 + (2*x + 2*x^2*y(x))*diff(y(x), x) = 0;
IC:=y(0) = 1;
maple_sol:=dsolve([ode,IC]);
#                         maple_sol := ()

my_sol_1:=x*y(x)*(2+y(x)*x)=0;
odetest(my_sol_1,[ode,IC])

#                             [0, 0]

PDEtools:-Solve(my_sol_1,y(x));
map(X->odetest(X,[ode,IC]),[%])

#   [[0, 1], [0, undefined]]

I downloaded the Maple free trial but could not find the Migration Assistant. What to do?

how to get the solution for this ode i am getting error 

in the pdf for the same parameter values getting plots but here it is showing error

santosh_sir_work.pdf

santosh_sir_work.mw

This is a report of a Maple_2015's bug, apparently fixed in more recent versions, but which may have persisted for a few versions beyond 2015.
I don't think it's necessary to fill out an RCS form.

All started with an error in my code which was balanced by a maple 2015 bug. So I didn't see any error until I sent my code to @C_R  who uses a newer Maple version.
More precisely, in my Maple 2015 code I defined a NxN matrix B, a vector A of length N, that I mistakenly defined as a vector column, and finally computed the quantity R = A . B . A+.
Of course Maple should have fire an error.

The bug is that Maple 2015 doesn't fire an error if A is a float vector and B a float matrix.

restart

kernelopts(version)

`Maple 2015.2, APPLE UNIVERSAL OSX, Dec 20 2015, Build ID 1097895`

(1)

A := Vector(2, symbol=a):
B := Matrix(2$2, symbol=b):
R := A.B.A^+

Error, (in LinearAlgebra:-Multiply) cannot multiply a column Vector and a Matrix

 

A := Vector(2, i -> i):
B := Matrix(2$2, (i, j) -> i+j):
R := A.B.A^+

Error, (in LinearAlgebra:-Multiply) cannot multiply a column Vector and a Matrix

 

A := evalf(Vector(2, i -> i)):
B := evalf(Matrix(2$2, (i, j) -> i+j)):
R := A.B.A^+

30.

(2)

R := A^+.B.A

30.

(3)
 

 

Download Maple_2015_Bug.mw

When clicking on a pink error message I get this

Can someone explain what is going on? Quite unusual for me all this.

I do not have a server to white list. What can I do about it?

Is that Sucuri thing safe?

Is there a way to disable / turn of ai in Maple Learn. The question is relevant because it is not allowed for our students to use AI during their exams.

Regards and happy holiday

using regular expression in Maple is little annoying, because one has to escape \ in the regx string itself, which makes it more complicated compared to other languages. For example

StringTools:-RegMatch("^\[.*\]$","[A]")

gives false. But

StringTools:-RegMatch("^\\[.*\\]$","[A]")

gives true.

Other languages have special function to generate the regx itself, which does not require escaping the \ when writing the regx Which makes it easier to see the regx (escaping is done under the cover). like this

Since all places and web sites that show examples of regx., do not have to escape \ before using, it will be good if Maple adds such special new function to StringTools to generate regx like the above so users do not have to remember to escape \.   

It is hard enough to use regx without having to also remember to escape things.

I could not find such a function in Maple. Does one exist?

Maple 2025.2

Variation of (a) Skin friction ∂W/∂Z​, (b) Heat Transfer ∂θ/∂Z​, and (c) Mass Transfer ∂ϕ/∂Z​ for γ=10.0, Pr=7.0, ε=1.0, Nt=0.4, and Nb=0.2.

10.0   0.03301 1.90406 0.21772
20.0   0.01212 1.90403 0.20269
30.0   0.00727 1.90402 0.19325
40.0   0.00522 1.90400 0.18645


how to get this values by solving the PDE by using the pdsolve method 

Variation of (a)W(b) θ and (c) ϕ for different value of γ when ε = 10.0, Nb = 0.4, ε = 10.0, Sc = 0.5 and Pr = 7.0.
consider X as 0.1

plume_work.mw

Why one is no longer able to upload worksheet here showing a problem? I found an internal error in int() but can't upload worksheet.

When I click on the green arrow and select my worksheet, I get this message

What is going on? I am on windows 10 and I tried 2 different browsers. So the problem is on the Mapleprimes site.

Can anyone else try to upload a worksheet to test to see if they get same problem?

I frequently receive this message after installing the most recent Maple update:

Can anyone help me with this? Thank you so much for your valuable support.

Hello,

I have upgraded to maple 2025, but the ui fonts are too small and very thin. I went to Files -> Options -> Interface -> Default Zoom, thet sat it up to 150%. It only changed the document area not the UI options. This solution used to work with Maple 2024. I am on ubuntu 22.04.

I've seen many here recommend using the screen reader for Maple 2025. So this is first time I tried it.

Clicked on this second icon in my windows 10 start menu

Maple came up using the old UI, which is good:

But here comes the big problem. The file->Open menu does not work. It automatically opened in location which is not what I want. I wanted to navigate to different place on my PC. But anything I click on just generates loud beep and does nothing. Can't type anything to change location either.

So can't open any file. Not only that, It is stuck and can't even close the windows. Can't get out. Everything is stuck. 

It could be because I have 2 monitors. I had this open on the second monitor on the right. Everything on the second monitor now do not respond like Maple. Luckily, on the left monitor I was able to start task manager and kill Maple in order to get out of this hang.    

Basically screen reader does not work at all for me. If I can't open a file.

It could be due to using 2 monitors. I do not know.

Does file open work for others?

Here is small movie.

Do not know if this is new or not.

I have found about 12 Maple crashes so far in just 2 days running a test in Maple 2025.2

But this one I am not sure if it is new or not as never seen it before.

Could someone please just run this in Maple 2025.1 and see if you get same crash? So I know if it is new or not. Only have Maple 2025.2 on this new PC.

Calling solve causes Maple server to crash. Save your work before just in case.

restart;

interface(version);

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

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.`

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.`

sol:=ln( (y-1)^(1/3)* (y^2+y+1)^(1/3) ) - ln(y) = 2/5* ln(t^2+1)+_C1;

ln((y-1)^(1/3)*(y^2+y+1)^(1/3))-ln(y) = (2/5)*ln(t^2+1)+_C1

infolevel[solve]:=5;

5

solve( sol,y);

Main: Entering solver with 1 equation in 1 variable

Dispatch: dispatching to Radicals handler

Transformer:   solving for linear equation in y

Recurse: recursively solving 1 equations and 4 inequations in 1 variables

Dispatch: dispatching to ln handler (extension)

Dispatch: logarithm substitution _S000002 = ln(_S000001)

Recurse: recursively solving 1 equations and 4 inequations in 1 variables

Dispatch: dispatching to ln handler (extension)

Dispatch: logarithm substitution _S000003 = ln(t^2+1)

Transformer:   solving for linear equation in _S000003

Recurse: recursively solving 1 equations and 3 inequations in 1 variables

Dispatch: dispatching to ln handler (extension)

Dispatch: logarithm substitution _S000004 = ln(exp(_S000002)^3+1)

Recurse: recursively solving 2 equations and 3 inequations in 2 variables

Dispatch: dispatching to ln handler (extension)

Dispatch: logarithm substitution _S000005 = ln(exp(_S000002)^6+3*exp(_S000002)^3+3)

Recurse: recursively solving 3 equations and 3 inequations in 3 variables

Dispatch: dispatching to Exponentials handler

Transformer:   solving for linear equation in _S000005

Recurse: recursively solving 3 equations and 4 inequations in 4 variables

Dispatch: dispatching to Exponentials handler

Transformer:   solving for linear equation in _S000004

Recurse: recursively solving 3 equations and 5 inequations in 5 variables

Dispatch: dispatching to Exponentials handler

Transformer:   solving for linear equation in _S000002

Recurse: recursively solving 3 equations and 6 inequations in 6 variables

Dispatch: dispatching to Rename handler

Dispatch: renaming exp(5/2*_C1) = _S000012, exp(-5/2*_C1) = 1/_S000012

Recurse: recursively solving 3 equations and 6 inequations in 6 variables

Dispatch: handling polynomials of the form a*x^n-b

Dispatch: dispatching to PolynomialSystem handler

Main: polynomial system split into 1 parts under preprocessing

Main: using RegularChains based methods

SolverVariableOrder: using the variable order  _S000008 > _S000006 > _S000010

TriangularDecomposition: using deterministic algorithm for decomposition

Download calling_solve_crashes_maple_2025_2_nov_28_2025.mw

Note that this crash happens even when removing Physics update and SupportTools from libname.

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.

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