- #1

jacoleen

- 15

- 0

## Homework Statement

Write the Machlaurin series for :

f(x) = (2x)/(1+x

^{2})

## Homework Equations

## The Attempt at a Solution

I tried finding all the derivatives (aka f(x), f'(x), f''(x), etc..) but the equations started getting longer and longer and would always result in 0 when x=0. This was on a final exam last year, and I don't think they would have made students do long computations like that

Also, I tried just finding the derivatives for (1-x)

^{-1}, but again, I ended up with a bunch of zeros

Help?