This is a question for our Customer Service team (not Technical Support); please see http://www.maplesoft.com/support/

Make sure you include your 16-digit Purchase Code and the school name in your e-mail, and they should be able to help you. The error message sounds as if the school gave you a different installer...

The images that you inserted are not displayed on MaplePrimes. Please try again.

Anyways, if the first error you're getting is "com.maplesoft.externalcall.MapleException: both worksheets are expectedto have the same maple input", then it's just telling you what's wrong. :-)

If "external" means running them independently of Maple: no, that's not possible. There is a Maplet Viewer (shipped with Maple), which essentially displays a splash screen and then the Maplet - without opening the worksheet interface. So that gives the impression of a standalone application.

Note that Maple can also be called from Java programs, besides C and VisualBasic. Please see ?OpenMaple,Java,API for the documentation. Perhaps that is an alternative approach for you.

There is no such plugin. But Maple has a simple slideshow mode; please see ?slideshow for more information. It works on all platforms, unlike Excel.

I've never encountered that error message, and I'm afraid nobody can help until you upload the model (msim file), including the optimization worksheet with the GetCompiledProc call. If uploading here is not an option for you, please send it to our technical support group.

Independently of that, inserting

infolevel[GlobalOptimization]:=5:

before calling GlobalSolve might help in pinpointing the problem.

s:=sqrt(3579757):
evala(s);

You entered correct Maple syntax, so that part is done. If your question is about getting rid of the lengthy piecewise expressions in the result: that can probably achieved by appropriate assumptions on a and x (haven't tried that), or by a non-default method. And the result can be simplifed further:

result:=int(sqrt(a^2+cos(x)),x=0..Pi,method=FTOCMS);
c:=combine(result,symbolic);
simplify(c);

However, the presence of EllipticE cannot be circumvented (if that was your goal)...

This can be done interactively. See menu item "File > Export As..." and select Rich Text Format (rtf) from the drop-down list of file types.

Commands such as fopen and fprint deal with writing data to files, i.e. programmatically. But they don't support rtf (and neither doc nor docx).

This question comes up frequently, not just on MaplePrimes. Please see here.

Interesting equation! You can make some progress by the following intermediate steps:

eqn := 2*tan(Pi*t^2)-tan(Pi*t)+tan(Pi*t)*tan(Pi*t^2)^2 = 0;
ceqn := convert(eqn,exp);
sceqn := simplify(ceqn);
sol := solve(sceqn,t,allsolutions); # to see the structure of the solution space
a := Student[Calculus1]:-Roots(sceqn, t = -2 .. 2);
na := numelems(a); # returns 14, as confirmed by your plot

Not too elegant, but working.

About your first question:

almost-empty-worksheet.mw

Can you see the above link and download my worksheet?
I just had to press the Cancel button when done in the "Upload file" window, which is a bit counter-intuitive.

Otherwise please specify what you found no longer functional.

1) The most general solution (including -arccos(a) you requested) is obtained by adding option 'allsolutions' (or 'AllSolutions' if you prefer). Please see ?solve,details for background info.

solve(cos(x)=a,x,'allsolutions');

2) That depends on the expression and the range. I'll leave it to other to comment on specific examples. An interesting one was recently discussed here, but I don't have the link, sorry.

You need to learn some basic Maple syntax. The assignment operator is := whereas = just forms an equation (which is another valid data structure in Maple). So try this:

a := 178: b := 312:
c := igcdex(a,b,'e','f');
14/c*e=x; 14/c*f=y;

AFAIR, on some machines there was an interference with the updates contained in that product installer. The following steps should resolve the problem:

1. Make sure no Maple or MapleSim session is running (check for mserver processes in the Task Manager).

2. Install the Maple 2015.2a update (in case of Windows or Linux, or 2015.2 for Mac OS X).

3. Install MapleSim 2015. Depending on when you purchased it, its installer may be at the 2015.1 or 2015.2 level. That should be displayed in the lower right corner of the splash screen.

4. If that is still at the 2015.1 level (check version.txt file in the license directory), install the MapleSim 2015.2a update (again, without the trailing 'a' in case of Mac OS X).

If the problem persists, please contact our tech support team and send your install logs, along with some details (OS version).

No, evalf is not permitted to discard any units. There is a helper routine convert/unit_free for that purpose:

with(Units[Standard]):
theta:=90*Unit(degree);
A:=sin(theta);
B:=10*theta;
S:=simplify(B);
C:=convert(S,'unit_free');
evalf(C);

I'm using 1D input here, but it works in 2D as well. There is also a context menu item "Units > Remove Units" which does essentially the same.