Out of curiosity, how is F defined?
I don't know if this is the cause, but when I try something similar, I get
a problem with y[n]: 'sage.symbolic.expression.Expression' does not support
indexing. Since it's a different error, you're probably encountering
something else.
john perry
On Thursday, February 7, 2013 8:29:03 AM UTC-6, Olajumoke Yetunde Fashomi
wrote:
>
> Am trying to generate adomian polynomials using sage.This is what i have
> done:
>
> var('y')
> from numpy import *
> from sympy import *
> m=10
> for n in range (m):
> if n==0:
> A(n)=F(y[n])
> else:
> a=(1/factorial(n))*(F(sum(l^n*y[n]))for n in range(m)).diff(n)
> A(n)=subs(l ==0,a)
> And it is giving me 'symbol getitem error'.
> Please help.
>
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