Simplify throws an error message and I don't understand why

Hi,

I get the following error message when i am playing around with the Simplify function and I was wondering why?

syms a b c R

A = (a*b + a*R)/(b+R)

Simplify(A, OutputType = "Proof")

Error: The expression to the left of the equals sign is not a valid target for an assignment.

Is this a new function within Matlab 2013b (I am currently using 2013a)? I have the Symbolic Math Toolbox (I did check this).

see also: example 9 on the following page: http://www.mathworks.co.uk/help/symbolic/mupad_ref/simplify1.html

Is there anything I am missing? Thanks in advance

Answer 1

[Friedrich]

Hi,

that syntax is a MuPAD command so it works in MuPAD only. In the case you want to call it from MATLAB use:

feval(symengine,'Simplify',A,'OutputType = "Proof"')

Answer 2

[Dirk kok]

Wow thanks.

I wasnt aware of mupad. I heard about it when reading funtions but not what it actually does. A new world is opening for me.

thanks for that