## How should Maple 2016 replace evalm in this proce...

plot3d of procedure Sievert correctly displays the constant curvature Sievert surface, but the procedure uses the deprecated command evalm.

What Maple 2016 statement(s) would create the same value of X in Sievert?

Sievert := proc (B)

local a, b, denom, m, X;

a := sinh(B)*u; b := cosh(B)*v;

denom := sinh(B)*((cosh(2*a)-cos(2*b))*cosh(2*B)+2+cosh(2*a)+cos(2*b));

m := cosh(B)*[sinh(a), sin(b)*cos(v), sin(b)*sin(v)]+[0, -cos(b)*sin(v), cos(b)*cos(v)];

X := evalm([u, 0, 0]-8*cosh(B)*cosh(a)*m/denom);

end proc:

plot3d(Sievert(.75), u = -2.5 .. 2.5, v = -10.5 .. 10.5, scaling = constrained, grid = [30, 100], style = patch, shading = xy, lightmodel = light3, orientation = [-3, 140], title = "Sievert's surface", titlefont = [Courier, bold, 14]);

## module or procedure call from module...

Can any one help me with an example of how to use module in embedded components where a (action:-

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 (1)

 (2)

 (3)

I want a procedure (say plot math container in a plot area) in place of arithmatic above.

OR I want a number of calculations under arithmatic ( a+b and a-b)

What is the method I should adopt? How do i insert another module or procedure inside the above module?

Which help page will help me?

Thanks.

Ramki

get command is used)?

I attach a module i made for edit and comment.

Thanks.

Ramakrishnan V

## Auto scroll for white space Maple 2017.2 ?...

Why doesn't Maple provide enough white space when user reaches end of document ? As you can see below, I have reached almost to the end of the page. I believe the default process would be to bring the cursor to eye-level (middle of the screen). Now in this case, I have to hit RETURN enough times to bring the cursor to my eye level.

Anyone else find this as an issue ?

## invalid subscript selector error...

im stuck here also still produces output but yeah  oh well :

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## How to simplify calculations?...

I have a very large set of equations that calculates for a long time. Up until now, I have designated the second derivatives and copied the finished equation to another program to do the simulation. But with this file I can hardly do anything because the equations are too long. Even saving a file after computation is not easy. Export to PDF takes 20 minutes and the file has 120 MB and 1000 pages. Recording to .mw has not gone yet due to the occurrence of a write error message. I have 16 GB of RAM and after calculation is 14 GB in use.

Any suggestions?

## Error i dont understand...

i know its really simple or such i just dont quite get what to do here moreso why it occurs for this particular delimiter

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## typesetting in maple plots...

Dear all,

I am trying to put labels for my axis and I use typeset to do that.

The code is:

plot(10^10*x, x = 0 .. 5,labels = ["x", typeset(10^10*Delta*z)],labeldirections = ["horizontal", "vertical"])

The problem is that  I get a label like below:

I mean it is not typed as 10^{10}, but 10000000000!!!

Can anyone help me in changing this to 10^10?

## Can Maple identify the type of statistical distrib...

Given a basic list of data, is it possible to extract the distribution type /  equation / probability density function?

## Alt-F4 and save oddities...

When I resave a worksheet that is already saved on the computer desktop, it changes the position of the icon on the desktop: it is moved to the most left-upper column-row possible. Why that? Can anyone else reproduce that odd behaviour?

A worksheet can be closed using the Windows standard shortcut Ctrl-F4. But the Maple program itself cannot be closed using the Windows standard standard shortcut Alt-F4. Why that? Can anyone else reproduce that odd behaviour?

PS: I am using Maple 2017.1

## Simplify symbolic powers modulo an integer...

I am trying to figure out how to simplify expressions like:

2^(6p+q) mod 3 (where p,q are variables representing integers)

Anybody know how to do this?

Even better would be something that solves 2^n=2 (mod 3) -> n=1 (mod 6)

Suggestions?

## Test Relation operation conflicts with Integration...

After using maple as a learning aid to compliment my Calculus 2 course for the past 2 months, I really have mixed emotions...

I realize Maple is capabale of much, much more than the simple integration problems I throw at it and as such, will hopefully see much more use in my pursuit of a Biochem degree.  But I keep getting disturbing results which make me question its accuracy...

For example, before I use the integration tutor, I use maple to test my steps as I work the problem on paper, making sure I am applying the correct substitutions as I work through the integration.  If I am not applying an operation or simplification properly, the test relation operation returns false, allowing me to correct the issue at that time.  If I still can't figure out why Maple is returning false, I'll resort to the integration tutor.   Yet, Maple routinely contridicts itself, using the same solution steps which it returned as false when tested in the worksheet?!?!

As a clear illustration:

Am I misunderstanding the proper use of the Test Relation function?  Any answers would be greatly appreciated.

## Error With Delimiters in a list of strings...

I dont understand why im getting this error at all.

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## Conformal Plot mapping function...

I was wondering if it were possible to call only the mapping function used to grahically display using a particular plot command in general, but aside from that, this is the one in specific id really like, naturally, since thats a bit of a hole in the understanding of what you are looking at thats probably important in some way to something.

## Error message: "Numeric exception: division by zer...

I use Maple & MapleSim 2016. I linked my MapleSim model to Maple worksheet and ran it in the Maple.
After that, I wanted to make the compiled one by using "GetCompiledProc" command in Maple.
I know that this command helps making compiled model with some user-specified parameters.
However, if I try to compile my MapleSim Model, error message appears and process stops.

Error message: (In GetCompiledProc) numeric exception: division by zero

Is there anyone how to avoid this error? I cannot find any solution for my problem.

I appreciate any idea or tip you may have.