[Maxima] simplify derivatives

Fabio fabio.pinna.2006 at gmail.com
Mon Jun 8 03:59:49 CDT 2009

Dear all,
I am a new user of maxima and I want to use it to manipulate a system
of differential equations.
I realized that I am non able to reduce the form

a*diff(b,x) + b*diff(a,x)

to the more compact


I tried defining a rule but it didn't work. Any experience with this?



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