I always run with the option "create a new engine for each document". which is a very nice feature in Maple.

The problem is that, when I have say 5 worksheets open and running, and one of them them hangs, I need to kill mserver.,exe from the task manager which is running this worksheet. 

most of the times I end up killing the wrong mserver.exe. I can sometimes guess by the CPU it is using. But if I have two running with high CPU it is not possible guess.

There is no ID or anything associated with the name. It will be nice if each process has in its name an ID which is also displayed in the worksheet bottom bar so one knows. This ID could be simply some random number. So the display will show  mserver-13847,exe ,   mserver-82739,exe and so on. And this name will be automtically displayed at the bottom bar of the worksheet where all time used, cpu used and memory used and so on is now displayed.  This will be a nice feature to add to Maple.  

If this is not possible, how about just displaying the PID (process ID)  of the mserver.exe connected to the worksheet in the bottom bar? This will also work, as task manager/details lists a processes with the PID there, so it will make it easy to find.

Meanwhile, while waiting for Maple 2033 to hopefully implement this feature, does anyone know of a method to help find which mserver.,exe is connected to which specific worksheet?

Windows 10.

Q1: In the above, why can I only convert radians to radians. Or: Why does the menu "Chose unit" not offer arcdeg?

Q2: In the above, why is nothing happening when I enter arcdeg in the field "Enter Unit"?

Q3: How to change the displayed symbol for arcdeg to ° (in the attachment are failed attempts)?

arcdeg.mw

Hi, 

How to determinate cartesian equation of Surface of revolution S ( obtained by rotation of curve around line 

) and how to illustrat it geometricly ?

Thanks
QuestionRev.mw

Do others see this problem? I do not understand what is going on. I am seeing this problem on many integrals

restart;
int(integrand)
   #Large output displayed
   #echo the input
int(...)
    #Large output displayed
    #echo the input 
int(...)
    #echo the input only. Large output gone
int(...)
   #echo the input only. Large output gone

restart;
int(...)
   #Large output displayed
   #echo the input 
int(...)
   #echo the input only. Large output gone
int(...)
   #echo the input only. Large output gone

In all the above, it is the same command used.

i.e. first time (sometimes needs two times), Maple displays large out. But looking at the end of this output, the very last line, we see the same integral/command is returned.

But second time and any attempt after that, it no longer gives that large output, but returns back/echos the command on the screen only.

Attached is worksheet showing this. This is new behaviour in Maple 2023 and I am baffled by it. Do others see it? Why does it happen. I will report it if others confirm it. I just wanted to make sure first it is not just me seeing this. 

Is it possible the large output is side effect and is being printed by error to the screen by internal Maple code? But why does it stop the second/third time?
 

Download int_stops_working_march_11_2023.mw

Update

Do you want to see something more bizzar? Try this command on same integral

restart;
res:=int((b*g*x+a*g)^2/(A+B*ln(e*(b*x+a)/(d*x+c))),x,method=_RETURNVERBOSE)

It prints to the screen results with ~ all over. But this seems to be internal leaked output and not part of the actual output returned.

By issuing the command as follows instead

restart;
res:=int((b*g*x+a*g)^2/(A+B*ln(e*(b*x+a)/(d*x+c))),x,method=_RETURNVERBOSE):

notice the : at the end!  I still see the same output as above printed displayed.

This tells me this is a leaked printout from an internal integration function.

Could others confirm this?

How would I produce output from ShowSolution in Latex form?

For example, if I run the following command.

$ maple2022/bin/maple -q problem.mpl

where problem.mpl is the following:

with(Student[Calculus1]):
ShowSolution(Diff(ln(x),x));

I get the following output.

Differentiation Steps
    Diff(ln(x),x)
▫    1. Apply the natural logarithm rule
        ◦ Recall the definition of the natural logarithm rule
        Diff(ln(x),x) = x^(-1)
    This gives:
    x^(-1)

I want the solver to show the steps in Latex form. How can I achieve this?

First issue I see in Maple 2023 integrate

Example 1

restart;
int( (e*x+d)^(3/2)*(c*x^2+a)^(3/2),x)

Example 2

restart;
int((1+x)^(3/2)*(x^2-x+1)^(3/2),x);

Example 3

restart;
int((c*x^4+b*x^2)^(3/2)/x^(3/2),x)

Worksheet below for 2023 and also for 2022.2 showing this did not have this problem in 2022.2. Internally for me, this cause other problem when post-processing this, that is why I found it. Any one knows what caused it?  Maple 2022.2 result is much longer, but it does have this "undefined" issue in the result.

Download bug_3_maple_2023_int_march_10_2023.mw

Download maple_2022_int_march_10_2023.mw

When will the PDF Maple User Manual be released for Maple 2023. Also I hope the Programming guide is updated too as it is still at 2020.

I know that this is not really a question regarding core Maple package, but I am running into problems during the installation process.

After having upgraded Maple networktools as mentioned, I am unable to run the activation program due to an error.

"Java Virtual Machine Launcher: Error: Could not create the Java Virtual Machine."

I've never had that problem before in previous versions. There was no Java installed on the (virtual) server, so I installed the latest OpenJDK to check if that solved the problem.

Unfortunately it didn't.

Any hints would be appreciated.

Windows Server 2012R2

The command for doing syntactical exact-match substitutions is subs, however, subs applies transformation rules throughout an expression only once. The documentation of eval claims that the (recursive) evaluation is repeated until either the result does not change, the documentation of applyrule claims that applyrule … applies the rules until no rule can be applied any more, and the documentation of MmaTranslator[Mma][ReplaceRepeated] claims that the single ReplaceRepeated command performs replacements until expression no longer changes.
So, if I comprehend correctly, 

restart;
x := [[[[]]]]: # Remove empty lists from x repeatedly.
(*⒈*) eval['recurse'](x, [[] = 'NULL']);
(*⒉*) applyrule([[] = 'NULL'], x);
(*⒊*) MmaTranslator:-Mma:-ReplaceRepeated(x, [[] = NULL])

should all return NULL, but in fact, 

eval['recurse'](x, [[] = 'NULL']);
 = 
                            [[[[]]]]

applyrule([[] = 'NULL'], x);
Error, (in PatternMatching:-AlgStruct:-TableLookup) invalid input: unknown uses a 1st argument, x, which is missing
MmaTranslator:-Mma:-ReplaceRepeated(x, [[] = NULL]);
 = 
                            () = ()

In other words, none of these replacements is feasible. 

Have I missed something? (It seems to me that an explicit procedural do...until loop can be actually avoidable here!) 

My main question is: How to change the font used in worksheet by Maple for 1D input from Courier to another font say times new roman? Is there a setting for this so it applies all the time?

ps. I found Can-I-Change-the-Default-Fonts-or-Style-for-Maple-Worksheets-and-Documents?language=en_US  (very hard to follow and confusing, but it seems that is only way to fix this problem now is to change the default font).

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

I noticed strange font problem using Maple 2023 on windows 10. This problem does not show on Maple 2022.2 (at least I do not think I've seen it or noticed it before). 

Variables with _ between the names, will have the underscore not display sometimes as I move the cursor around (movie at end).

When scrolling back up, the underscores no longer become visible. 

But as I move the cursor over the variable name which containes the underscore, they will now show up.

I am sure this is a font issue. The zoom is set at 100%. I made no changes at all other than making the input 1D math as I normally do and set the default to worksheet. Some of my setting are below.

This could be a DPI issue settings of some sort. My monitor is standard monitor (not a 4K one) and again, I have not changed any settings on my PC after I installed Maple 2023 and did not change any hardware.

Here is some system information also

Here is the movie showing the problem

As I play more with it, I notice a common theme. This happens when I hit the UP ARROW to go to the line above. Then suddenly the underscroes no longer visible. Once I hit the LEFT arrow (now I am at the above line), they show up again.

Here is another movie which more clearly shows this.

This makes it very hard to work with the code in the worksheet. But I am sure this can be fixed as it looks like just a font configuration issue with Maple on windows. But I do not know what it is and how to fix it.

I found something new. When setting the ZOOM at 125% instead of 100% as above, I notice the underscores do not completely disappear but become THINNER but one can still see them. This affects only the underscores. When the ZOOM at 150%, they do not change at all.  Here is a movie. first part at 125%. Notice how they become little thinner when doing the same thing as above. But at 150% they remain visible because they do not change thinkness. When going back to 100% zoom, they  no longer show.

So the problem is that they are there all the time, but depending on the ZOOM level, they beome thinner and thinner until they become invisible to the eye.

I found some related issue on windows 10 with some application where this problem shows up.

some-characters-missing-or-cut-off-when-displayed-on-screen

 "When you view your document in Microsoft Word, some characters may be missing, or the top (or bottom) of some characters may be cut off.

This problem may affect the following types of characters:

Underscore"

The above is about WORD, but it could as well apply to Maple?

I also found  underscore not rendering with courier

"Underscore characters are not rendered in new Google Docs in the Courier
New 11pt or 12pt fonts."

My question is: How to change the font used in worksheet by Maple? Now it is using Courier. May be if I change the font, this problem will go away?

Update: Found a workaround!  It is the font used!  I changed from Courier to Times New Roman and now the underscore do not change thinkness!  I just need a way to make this permenant for all 1D Maple input.   Here is a new movie showing it is fixed. You can see the underscores remain visible, all at 100% ZOOM level. Once I change to Courier, the problem show up again. 

I am not sure if this is a Maple issue or windows.

Download easy_way.mw

The moment we've all been waiting for has arrived: Maple 2023 is here!

With this release we continue to pursue our mission to provide powerful technology to explore, derive, capture, solve and disseminate mathematical problems and their applications, and to make math easier to learn, understand, and use. Bearing this in mind, our team of mathematicians and developers have dedicated the last year to adding new features and enhancements that not only improve the math engine but make that math engine more easily accessible within a user-friendly interface.

And if you ever wonder where our team gets inspiration, you don't need to look further than Maple Primes. Many of the improvements that went into Maple 2023 came as a direct result of feedback from users. I’ll highlight a few of those user-requested features below, and you can learn more about these, and many, many other improvements, in What’s New in Maple 2023.

• The Plot Builder in Maple 2023 now allows you to build interactive plot explorations where parameters are controlled by sliders or dials, and customize them as easily as you can other plots

• In Maple 2023, 2-D contour and density plots now feature a color bar to show the values of the gradations.

• For those who write a lot of code:  You can now open your .mpl Maple code files directly in Maple’s code editor, where you can  view and edit the file from inside Maple using the editor’s syntax highlighting, command completion, and automatic indenting.

• Integration has been improved in many ways. Here’s one of them:  The definite integration method that works via MeijerG convolutions now does a better job of checking conditions on parameters so that they are only applied under proper assumptions. It also tells you the conditions under which the method could have produced an answer, so if your problem does meet those conditions, you can add the appropriate assumptions to get your result.
• Many people have asked that we make it easier for them to create more complex interactive Math Apps and applications that require programming, such as interactive clickable plots, quizzes that provide feedback, examples that provide solution steps. And I’m pleased to announce that we’ve done that in Maple 2023 with the introduction of the Quiz Builder and the Canvas Scripting Gallery.
• • The new Quiz Builder comes loaded with sample quizzes and makes it easy to create your own custom quiz questions. Launch the quiz builder next time you want to author interactive quizzes with randomized questions, different response types, hints, feedback, and show the solution. It’s probably one of my favorite features in Maple 2023.

• The Scripting Gallery in Maple 2023 provides 44 templates and modifiable examples that make it easier to create more complex Math Apps and interactive applications that require programming. The Maple code used to build each application in the scripting gallery can be easily viewed, copied and modified, so you can customize specific applications or use the code as a starting point for your own work

• Finally, here’s one that is bound to make a lot of people happy: You can finally have more than one help page open at the same time!

For more information about all the new features and enhancements in Maple 2023, check out the What’s New in Maple 2023.

P.S. In case you weren’t aware - in addition to Maple, the Maplesoft Mathematics Suite includes a variety of other complementary software products, including online and mobile solutions, that help you teach and learn math and math-related courses.  Even avid Maple users may find something of interest!

The new command ArrayTools[GeneralOuterProduct] (introduced in Maple 2021) computes the generalized outer product of two rtables, and again, there exists a similar function Outer in Mma (cf. the end of this question). But in practice, it appears that this Maple command is not so fast as Mma's one. To begin with, we need to generate four lists: w, x, y, and z. Our goal is forming all possible combinations of the lowest‐level elements in a nested structure (rather than a flat structure). Now let us start the test.

In Mathematica (the real time is about ): 

And in Maple (the real time is about ): 
 

Download Outer.mw

As you can see, Maple and Mathematica returns identical results (∵p₁＝p₃); nevertheless, Maple consumes too much time: the ratio is 199.880/0.784176 ≈ 254.892. (What a wide gap between them!) 
So, is there any possibility of speeding up Maple's ArrayTools:-GeneralOuterProduct? Or any ideas of obtaining the same results in Maple efficiently?

Explanatory notes. Here is an illustrative animation: 

Let L be a list like

L:=[[3, 2], [2, 1], [1, 2], [1, 2], [2, 3], [2, 1], [1, 2], [1, 1], [2, 1], [1, 2], [1, 1], [2, 1], [1, 1], [1, 3], [1, 2], [2, 1], [1, 3], [1, 3], [1, 3], [1, 2], [2, 2], [2, 3]]

Now we consider [3,1] and [1,3] as same 

First we form a list gives us 

Lk:=[[[1,3],4],[[1.2],11],[[2,3],3],[[2,2],1],[[1,1],3]]

That is [1,3] appears 4 times in L

[1,2] appears 11 times in L

[2,3] appears 3 times in L

[1,1] appears.3 times in L

[2,2] appears 1 times in L

now we do addtion in [1,3] which is 1+3=4 therefore [[1,3],4] become [4,4]

[2,2] becomes 2+2=4 therefore [[2,2],1] is [4,1]

[[1,2],11] become [3,11]

[[2,3],3] becomes [5,3]

[[1,1],3] becomes [2,3]

So new list is [[4,4],[3,11],[5,3],[2,3],[4,1]]

so answer is from [4,4] we get 4 *4 , from [3,11] we get 3*11 , from [5,3] we get 5*3 and from [2,3] we get 2*3 from [4,1] we get 4*1

final required answer is (4*4)*(3*11)*(5*3)*(2*3)*(4*1)  =190080

Any list L like above if given kind help with a function which can do the above operation and give the final answer that is in above case 190080

Hi,

 Is it possible to write the Maple code to reach the partial differential equation from the following answer and reach the equation?

 Examples of it