# Math Help - find a power series representation for the function

1. ## find a power series representation for the function

f(x)= x^2/(1-2x)^2 without using maclaurin series

2. Originally Posted by twilightstr
f(x)= x^2/(1-2x)^2 without using maclaurin series
$f(x)= x^2/(1-2x)^2$

use the binomial expansion of $(1-2x)^{-2}$

CB

3. i still don't know how to solve the problem.

4. Originally Posted by twilightstr
i still don't know how to solve the problem.
Have you done the binomial expansion? You will find it on Wikipedia, and the relevant paer of the article is reproduced in the attachment. (Use x=1 y=2x r=2 in the formula to get the required expansion)

CB