# Math Help - Help on a Power Series Question!

1. ## Help on a Power Series Question!

HI could anyone help me with this power series question............dont know where to start!!!

Thanks

2. $f(x) = f(0) + f'(0)x + f''(0)\frac{x^2}{2!}+\dots$

You have to find the relevant derivatives of f(x) for this.

For the power series question use

$(1-x)^{-n} = 1- \frac{nx}{1!}+\frac{n(n+1)x^2}{2!}-\frac{n(n+1)(n+2)x^3}{3!}+\dots$

3. Im still confused i understand power series very little.
Could you show me how to answer the first part?