MaplePrimes Questions

In the below I had to add the assumption x>=0 to get simplifications. Am I wrong with my interpretation that the other assumptions should have been sufficient?

(I would also be interested in any other ways to simplify this expression.)

NULL

sqrt((-alpha^2*x^2 + R^2 + x^2)/(-alpha^2*x^2 + R^2))/sqrt(R^4/((-alpha^2*x^2 + R^2 + x^2)^2*(-alpha^2*x^2 + R^2)))

((-alpha^2*x^2+R^2+x^2)/(-alpha^2*x^2+R^2))^(1/2)/(R^4/((-alpha^2*x^2+R^2+x^2)^2*(-alpha^2*x^2+R^2)))^(1/2)

(1)

simplify((1),radical);

simplify/radical does not work because the signs of the nominators and denominators are not known

((-alpha^2*x^2+R^2+x^2)/(-alpha^2*x^2+R^2))^(1/2)/(R^4/((-alpha^2*x^2+R^2+x^2)^2*(-alpha^2*x^2+R^2)))^(1/2)

(2)

simplify((1),radical)assuming R>0,alpha>0,x*alpha<R

Since R and alpha are implicitly assumed real by R>0 and alpha>0, x must be real as well. However simplify does not deduce this form the assumptions:

((-alpha^2*x^2+R^2+x^2)/(-alpha^2*x^2+R^2))^(1/2)*(-alpha^2*x^2+R^2+x^2)/(R^2*signum(-alpha^2*x^2+R^2+x^2)*(1/(-alpha^2*x^2+R^2))^(1/2))

(3)

simplify((1),radical)assuming R>0,alpha>0,x*alpha<R,x::real

Assuming explicitly x::real has no effect

((-alpha^2*x^2+R^2+x^2)/(-alpha^2*x^2+R^2))^(1/2)*(-alpha^2*x^2+R^2+x^2)/(R^2*signum(-alpha^2*x^2+R^2+x^2)*(1/(-alpha^2*x^2+R^2))^(1/2))

(4)

simplify((1),radical)assuming R>0,alpha>0,x*alpha<R,x::nonnegative

Only when x>=0 is assumed the signum function disappears

(-alpha^2*x^2+R^2+x^2)*((-alpha^2*x^2+R^2+x^2)*(-alpha^2*x^2+R^2))^(1/2)/(R^2*(-alpha^2*x^2+R^2)^(1/2))

(5)

Still Maple does not realise that -alpha^2*x^2+R^2is positive and can therefore be extracted from the root in the numerator to further simplify.
To do so annother simplify option is required (which still requires x>=0)

simplify((1),power)assuming R>0,x>=0,alpha>0,x*alpha<R

(-alpha^2*x^2+R^2+x^2)^(3/2)/R^2

(6)

 

 

NULL


 

Download simplify_radical.mw

We are looking for the smallest natural number n with the property that both the digit sum Q(n) of the number n and the digit sum Q(n + 1) of the successor of n are divisible by 5.

In Maple 2025.1, why don't all the hotkeys show up when I press the Alt key?

Maple 2025.0 is OK,but update to 2025.1 all the hotkeys don't show up when I press the Alt key.Why?

During a birthday party, the birthday child realizes: In 1968, I was the same age as the sum of the digits of my birth year. How old will I be now at the end of 2025?

(Please no AI solution)

In the decimal system, specify the smallest natural number k that begins with the digit 7 and has the following additional property:
If you delete the first digit 7 and write it at the end, the newly created number z = (1/3)*k.

My name is William Cheung.  I am a Snapdragon X AIPC product manager.  I am reaching out to inquire about the current and future compatibility of Maple on Snapdragon X Windows PCs, which run on ARM64 architecture. With the growing adoption of ARM-based systems in enterprise and academic environments—especially those powered by Qualcomm’s Snapdragon X Elite platform—we are evaluating software solutions that can run efficiently on these devices.

Could you please confirm:

  1. Whether Maple, as a commercial product, currently supports Windows on ARM (either natively or via emulation)?
  2. If not, is there a roadmap or timeline for ARM-native support?
  3. Are there any known performance or compatibility issues when running Maple on Snapdragon X PCs using Microsoft’s Prism emulation?

Note that I have successfully installed and run Maple 2025 with sample worksheet files on my Snapdragon X Windows PC.

Thank you for your time and assistance. I look forward to your response.

Hello, I am struggling with a Maple Flow document that has gotten a too large to manage - maybe around 100 printed pages of relatively straightforward calculations, basic plots, etc. - nothing exotic or what should be computationally intensive.  The worksheet takes a long time to load, if it loads at all, is prone to freezing and requires force quitting of the OpenJDK Platform binary when this happens, and oftentimes generates a kernal connection error:

So, in short, lots of issues that make usability a challenge. The document is easily broken into smaller sections, which I would prefer to do anyway. I have attempted to use the RunWorksheet command and can more or less get it to work for very simple cases:

However, the output is not ideal in that it includes the variable string. This command also doesn't appear to pass custom-defined units. The other issue is that when I test this same syntax on a fully-developed, formatted, etc., Maple Flow worksheet, I get invalid input warnings and can never get any values returned.

Ideally, what I would like to do is call a variable defined in one Maple Flow worksheet and have it be immediately usable in another Maple Flow document, or at least usable with some minimal processing. If anybody has any ideas, I would appreciate it.

Thanks

Hello, I am trying to get the Maple Flow add-in for Excel working and am following the step-by-step directions in Chapter 7.3 of the Maple Flow manual. My computer meets the requirements listed in Chapter 7.2.

After selecting the WMIMPLEX64.xla file as directed in the procedure, I get the following error in Excel:

The Excel toolbar also does not show the same six icons in the add-in toolbar that are shown in the Maple Flow manual (see the manual excerpt below); it appears that the missing icon is the key icon that would initiate the Maple Flow worksheet wizard.

If anybody has been able to get this to work or has suggestions to resolve these errors, I would appreciate any advice.

Thanks

Excerpt from the Maple Flow manual:

Hello Maple Community,

I'm working on solving a PDE system for fluid flow in an L-shaped cavity (similar to previous work on H-shaped and square domains ) recently asked by some one here. I've implemented the governing equations in Maple but need help generating contour plots.

I'm attaching:
1. My Maple worksheet l_shape_cavity.mw
2. A PDF with the problem description and equations L_shape_cavity_work.pdf

The main issues I'm facing are:
- Setting up proper boundary conditions for the L-shaped domain
- Generating contour plots for velocity and pressure fields
- Ensuring the solution converges properly

Could you please help me with:
1. Correct implementation of the L-shaped domain geometry
2. Generating proper contour plots
3. Any suggestions for improving the numerical solution

Thank you for your assistance!

In Maple 2025 we are having problems with units.

In Maple 2024 we did not see same errors. Maple sheets working with Maple 2024 does not run in Maple 2025.

In Maple 2025, some units which are f.x. obviously 'J' is not recognices as 'J'.

In Maple 2025, part of units dissapears from expressions.

Just an example; the function v(t) below has correct units m/s, but when using simplify, the unit is changes to m

The Maple file: Error_with_units.mw

Is there a way to use alternative plotting packages in Maple such as open source options: Plotly or Matplotlib?

https://plotly.com/python/

https://matplotlib.org/

Hello, I am trying to use the annotation plot option to display coordinates in a function such as the example below that I created and successfully executed in Maple Flow::

However, when I apply this to another function that I have created, I cannot get the coordinate annotations to display. It appears to me that the syntax is correct and matches my example above, but there is something not correct and I am not seeing the problem. If anybody has any suggestions, I would appreciate any help.

Plot_Annotation.zip

Thanks

Solving an ode, dsolve says it used exact method and gives two solutions as result (correct result).

But when asking dsolve to solve same ode but now specifying that it uses exact method (i.e. same one it used itself before), now it gives one solution only, not two as before.

Why is that? Should not both commands give same result? i.e. two solutions?

interface(version);

`Standard Worksheet Interface, Maple 2025.1, Linux, June 12 2025 Build ID 1932578`

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;

ode:=3*y(x)^3*x^2+y(x)^4+(3*x^3*y(x)^2+y(x)^4+4*x*y(x)^3)*diff(y(x),x) = 0;
DEtools:-odeadvisor(ode);
infolevel[dsolve]:=5:

3*y(x)^3*x^2+y(x)^4+(3*x^3*y(x)^2+y(x)^4+4*x*y(x)^3)*(diff(y(x), x)) = 0

[_exact, _rational]

sol:=dsolve(ode); #gives two solutions

Classification methods on request

Methods to be used are: [exact]

----------------------------

* Tackling ODE using method: exact

--- Trying classification methods ---

trying exact

<- exact successful

y(x) = 0, x*y(x)^4+x^3*y(x)^3+(1/5)*y(x)^5+c__1 = 0

maple_sol:=dsolve(ode,[exact]);  #why y=0 solution do not show here??

Classification methods on request

Methods to be used are: [exact]

----------------------------

* Tackling ODE using method: exact

--- Trying classification methods ---

trying exact

<- exact successful

x*y(x)^4+x^3*y(x)^3+(1/5)*y(x)^5+c__1 = 0

sol:=dsolve(ode); #gives two solutions again

Classification methods on request

Methods to be used are: [exact]

----------------------------

* Tackling ODE using method: exact

--- Trying classification methods ---

trying exact

<- exact successful

y(x) = 0, x*y(x)^4+x^3*y(x)^3+(1/5)*y(x)^5+c__1 = 0

 

 

Download why_different_solutions_maple_2025_1_oct_22_2025.mw

I've been using the $include statement when using code written in Visual Basic Editor for packages quite extensively, and this works very nice.

Would it be possible to outsource code to external files for code not in packages / libraries as well? If yes, how would this be done?

Probably an odd question, but please bear with me.

Mechanical design guy, previous Mathcad user. Liking Mapleflow alot. My issue is maple flow does not see any subfolders within the PDM "vault". The vault is designed to act with, and just like File Explorer. So I can paste mapleflow files into a subfolder within the vault, I can double click and open the file up. But when you "save as" the file, Mapleflow only sees the root directy. No other folder structure with the vault. So it makes it impossible to use the vaults functionality out side of manually copying and pasting files after the fact to where you want them. Note that he vault is desgned to use any file type. It's the Mapleflow application that's can't seem to see subfolders inside the "Vaults" root directory. Note that I've never see this with any other file type or application if many years of PDM use.

I am on the EMP plan so I'd sure be interested to have someone look at this?

Thanks for any insight!

1 2 3 4 5 6 7 Last Page 1 of 2437