Systems of differential and algebraic equations are usually called DAEs. In the context of MapleSim, we're solving those all the time. So, yes, Maple has DAE solvers. Please see ?dsolve,numeric,dae for more info. Also check out the ?examples,numeric_DAE worksheet.

DifferentialAlgebra was added in Maple 14; in earlier versions, you could use diffalg instead. As far as I know, these two packages use essentially the same fundamental algorithms (Rosenfeld-Groebner in particular), but the newer package has more functionality and is partially based on an external C library, hence much faster. Please see http://www.maplesoft.com/support/help/Maple/view.aspx?path=DifferentialAlgebra&term=DifferentialAlgebra for more info.

like this:

seq(assign(cat(a,i),5),i=1..40);

or, if you prefer an explicit do loop:

for i from 1 to 40 do
  cat(a,i) := 5
end do;

Using cat is recommended; see the remark on the || operator help page.

MSK 15 and MSK 14 (haven't checked earlier versions) are definitely available for Windows, Linux and Mac OS X. If you purchased it via our webstore, please contact the Customer Service team; see http://www.maplesoft.com/support/ for more info.

Have you seen that the Interior Point method has been added? Check out this page.

These numbers are called equation labels. You can insert a reference to such a label by pressing Ctrl-L or by using the Insert > Label menu item. Please see ?equationlabels for more info.

I can reproduce this phenomenon in Maple 14.01 on Linux; haven't tried other platforms.

After a restart command, operands are sorted as expected.

See here for the e-mail address. Include your Purchase Code, and perhaps attach your license.dat file from Maple's license folder.

I haven't actually tried, but you could take a look at this package.

For chcon documentation, the man page points to info coreutils 'chcon invocation' at least on our Ubuntu system. And yes, if you install Maple as root, the files will be owned by root, so it probably makes a difference for SELinux. I'm not familiar with its details; all I can say is that the FAQ hint on chcon helped with many Fedora versions, and also with CentOS. If it still doesn't help, you could contact technical support, but please note that Fedora is not an officially supported platform, so we might not have a solution. If you can't live with the workarounds you already found, replace Fedora by a less problematic distribution.

See the help page for NyquistPlot. You have to add range=0.1..0.9 (adjust the endpoints as needed). This can be combined with the view option, which is just a common plot option and may not be optimal for Nyquist plots.

See this FAQ (not specific to cmaple, by the way). For 64-bit Linux, the directory would be bin.X86_64_LINUX. If you have Maple toolboxes with their own binaries, the step may have to be applied to these directories as well.

Your typeset formula has a factor s that's missing in your Maple input.

Also try this, provided that you run Maple 12 or newer:

with(DynamicSystems):
sys := NewSystem(1/(s*(1/5*s+1)*(1/2*s+1)));
RootLocusPlot(sys);

That would certainly be of interest!

I have his textbook on ODEs (paperback, in German) and like his style. Sadly, he passed away in June 2010.

Thanks in advance for your postings.

... are listed at http://www.maplesoft.com/books/books_search.aspx?C=50&sortby=date