@Robert Israel Thanks for the correction.

@Robert Israel Thanks for the correction.

@PatrickT Thanks, I was hoping users would extend this as needed. ([0-9]+) is a regular expression that matches one or more digits. The parentheses, which group a regular expression, are superfluous in all the regular expressions and can be elided.  In the Pages line, sprintf("%") is equivalent to "".

@aryan_ams If A is invertible (det(A) <> 0), then the result should be the empty set. For example,

 LinearAlgebra:-NullSpace(Matrix([[1,0],[0,2]]));
                                 {}

The only vector that is a member of the null space, then, is the zero vector.

@aryan_ams If A is invertible (det(A) <> 0), then the result should be the empty set. For example,

 LinearAlgebra:-NullSpace(Matrix([[1,0],[0,2]]));
                                 {}

The only vector that is a member of the null space, then, is the zero vector.

Maple actually returns NULL because the final do loop isn't executed when m=0.  It isn't clear to me what you want to return, maybe

return eval(R);

Maple actually returns NULL because the final do loop isn't executed when m=0.  It isn't clear to me what you want to return, maybe

return eval(R);

@John Starrett Use the plotoptions option, e.g. 'plotoptions' = "color=rgb".  It gets passed to ?plotsetup.  You may want to change the default.  See ?plot,ps for details.

@John Starrett That's a good idea and a nice way to handle it.

A weakness of my design is that the default location of the temp file is ?currentdir(), which is not necessarily writable and also probably not a great place to be writing, regardless.  I didn't know the usual location of a temporary directory in Windows.  A quick web search indicates getenv("TEMP") should work in Windows. 

@protrader The peakdet procedure is assigned in a startup code region in the worksheet. Click the gear-like symbol on the toolbar, or select Edit -> Startup Code from the menu to open the code region.

@protrader The peakdet procedure is assigned in a startup code region in the worksheet. Click the gear-like symbol on the toolbar, or select Edit -> Startup Code from the menu to open the code region.

@viraghj One difference is that I have a 64-bit installation.  Maple does modify LD_LIBRARY_PATH, you can inspect it with, say,

map2(printf, "%s\n",StringTools:-Split(getenv("LD_LIBRARY_PATH"),":")):
/usr/local/share/maple/15/bin.X86_64_LINUX/X8664SSE2
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64/server
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64
/usr/local/share/maple/15/jre.X86_64_LINUX/../lib/amd64
/usr/local/share/maple/15/bin.X86_64_LINUX
/usr/local/share/maple/15/toolbox/MapleSim/bin.X86_64_LINUX
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64/server
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64/native_threads

/usr/lib
/usr/local/share/maple/15/bin.X86_64_LINUX/opengl
/usr/local/share/maple/15/toolbox/MapleSim/bin.X86_64_LINUX

@viraghj One difference is that I have a 64-bit installation.  Maple does modify LD_LIBRARY_PATH, you can inspect it with, say,

map2(printf, "%s\n",StringTools:-Split(getenv("LD_LIBRARY_PATH"),":")):
/usr/local/share/maple/15/bin.X86_64_LINUX/X8664SSE2
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64/server
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64
/usr/local/share/maple/15/jre.X86_64_LINUX/../lib/amd64
/usr/local/share/maple/15/bin.X86_64_LINUX
/usr/local/share/maple/15/toolbox/MapleSim/bin.X86_64_LINUX
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64/server
/usr/local/share/maple/15/jre.X86_64_LINUX/lib/amd64/native_threads

/usr/lib
/usr/local/share/maple/15/bin.X86_64_LINUX/opengl
/usr/local/share/maple/15/toolbox/MapleSim/bin.X86_64_LINUX

@aryan_ams Before the call to fsolve, do

Digits := 50:

You might want to try an even higher setting.  Undoubtedly there are better approachs, but this seemed the simplest.

@aryan_ams Before the call to fsolve, do

Digits := 50:

You might want to try an even higher setting.  Undoubtedly there are better approachs, but this seemed the simplest.