Removing exponents from a sysm class term

I am interested in removing the exponents from a syms class object. For instance, i wish the following expression,

answer = x^2 + y^2*z^2

to instead take the form of,

answer = x + y*z

I was wondering if there was a shorter way to do this other than writing my own muPad procedure.

Thanks in advance.

Ross Montgomery

Answer 1

[Alexander]

You can use evalin to do a substitution of the powers inside MuPAD:

 >> evalin(symengine, ['subs(', char(answer) ,', hold(_power) = (x->x), EvalChanges)'])

 ans =

 x + y*z

[ross montgomery]

Hi Alexander,

This worked great and is exaclty what i was looking for.

Many thanks.

Ross

Answer 2

[Walter Roberson]

You might be able to do something using MuPad's map() and match(); http://www.mathworks.com/help/symbolic/mupad_ref/match.html

Side note: Extended Symbolic Math Toolbox only applied to the Maple-based Symbolic Toolbox which predated the MuPAD based Symbolic Math Toolbox.

[ross montgomery]

Thanks for your response Walter and i'll stop tagging "Extended Symbolic Math Toolbox" on all of these problems.

Thanks again.

Ross