# Hypergeometric function

1. Nov 2, 2009

### gholamghar

1. The problem statement, all variables and given/known data
write the following serie in the form of hypergeometric function:
f(x)=$$\sum$$$$\frac{(-1*(x^2))^n}{(2^n)(2n-1)(2n+1)(2n+3)}$$

n changes from 0 to $$\infty$$

2. Relevant equations
hypergeometric function:

3. The attempt at a solution
guys i have thought about this for 2 hours,and i had not any initial idea how to solve it,i appreciate if anyone could give me an initial idea that how should i solve this problem

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Last edited: Nov 2, 2009