Another suggestion is to check your Maple 11 dot release. One of our customers reported similar problems with Maple 11.00, and I recommended updating to 11.02 which you can find at http://www.maplesoft.com/support/downloads/m11_02update.aspx

Please also select "Enabled" under Tools > Options > Display > Plot anti-aliasing which improves screen output quality. Factory default is "Disabled", if I recall correctly.

From that rather vague description it's hard to tell what the problem is. A common source of problems is the configuration.

Make sure that  "Replace existing output when re-executing groups" is checked in Tools > Options > Display.

It should be checked by default, but maybe you changed it inadvertently.

Please check whether your CD has some dull spot on the the data side (i.e. the back side).

A handful of customers in our distribution region (Germany and Austria) reported similar errors either for the x86 or the x86_64 installer, and they were provided with an individual download link (and a replacement CD if requested). I'm sure that your reseller will find an equivalent solution.

I guess you are looking for the assign command:

sol := fsolve({2*x + y = 1, x - y  = 2}, {x, y});

assign(sol);  # note that this produces no output!

y;  # outputs -1.

Here's my suggestion for the first question:

S:=table(Equate([entries(T)],[indices(T)]));

You can probably construct the second answer using the sort command.

If I understand your question correctly, this is my suggestion: say, you have entered three such functions:

y_1:=t->t; y_2:=t->t^2; y_3:=t->t^3;

Then form a sequence of them, put them into a list, and plot them:

plot([seq(y_||i,i=1..3)](t),t=-1..1);

See ?seq, ?|| and ?set for the details.

You could construct a set by using { and } instead of [ and ], but then the order is undefined, and the plot could be confusing.

The first could be done in two steps:

simplify(zz2,symbolic); combine(%,symbolic);

Sorry, no idea for the second question, unless you accept interface(prettyprint=1)...

The ExcelTools package which provides Import and Export routines for xls files has been introduced in Maple 11.

This feature has nothing to do with the Excel Add-In (which has been around since Maple 6).

I don't get any errors in Maple 10.06 for the matrices I tried. Did you take a look at ExportMatrix instead?

MathML comes in two flavours: presentation and content, and Maple supports both. Find out more about this at ?MathML.

You will have to add the 'outputformat'='content' option to the MathMLEditor call, as the default is 'presentation'. The content is then automatically simplified to 2*x for your example. One could replace Import by ImportContent, but that's not necessary here.

My old wish related to that was that all NAG functions available were described in the help pages [...]

That feature is available in the Maple-NAG-Connector, a toolbox for accessing the complete NAG C library; see

http://www.maplesoft.com/products/toolboxes/nag/index.aspx

I guess it's by design, to prevent overly long outputs. You can alway request explicit expansion through

Im(expand(( u+i*v / u+i* v+lambda)^4));

If you want Maple to treat 'i' as the imaginary unit, you'll need interface(imaginaryunit='i').

I haven't gone through all details of this discussion, but isn't it a good reason to implement the incomplete beta function (numerically and symbolically)?

See e.g . http://en.wikipedia.org/wiki/Beta_function#Incomplete_beta_function for the definition.

Currently, we have the "complete" beta function available as Beta.

It's hard to give helpful hints without seeing your PDE system, but let's try:

If you have a solution such as your f(u,v) term, pdetest should be able to determine whether it solves the PDE (system). If the result is non-zero, you might be able to derive conditions on the constants c1, c2, etc. from it.

As for pdsolve, in the ?pdsolve help page, look up the paragraph beginning with

HINT = any algebraic expression

That way you can supply your own ansatz.

AFAIR; Maple V releases 3, 4 and 5 were all regarded as major versions (I'm not sure about 5.1), so there were no updates available per download. This is different from minor updates (patches), and for those old releases, the patches have been removed years ago, not recently.

If you want to purchase an update, you'll get the current version. Which won't run on a 486, of course.

The Computational Mathematics group at University of Kassel has experts on this topic. Please see www.mathematik.uni-kassel.de/~koepf/ for more information. Prof. Koepf has contributed many routines to Maple, e.g. the convert/FormalPowerSeries in Maple 11.