Dear list,
i am a newby to sympy, and i should say that i liked what i found, so ...
first of all kudos to the developers.
as of now i can succesfully generate my finite element matrices using
sympy, which saves me quite a lot of work.
the point is that now i would like to optimize a bit what i did, and i
would like to collect some common factors between the entries of a matrix.
for example imagine that i have (pseudocode and just an example, no physics
behind)
a,b = symbols('a b')
A = Matrix(2,1)
A[0] = a*(exp(a+b)+exp(b^2))
A[1] = b*(exp(a+b)+exp(b^2))
i would like a way to detect that the term
(exp(a+b)+exp(b^2))
is common to the different entries and eventually later on do something of
the type
aux = (exp(a+b)+exp(b^2))
A[0] = a*aux
A[1] = b*aux
note that later on for me it would be still interesting to do something
similar on SOME of the entries of the matrix
for example if i had
A = Matrix(3,1)
A[0] = a*(exp(a+b)+exp(b^2))
A[1] = b*(exp(a+b)+exp(b^2))
A[2] = a+b
i would still love to have
aux = (exp(a+b)+exp(b^2))
A[0] = a*aux
A[1] = b*aux
A[2] = a+b
thanks in advance for any suggestion.
cheers
Riccardo
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