Homework Help: Taylor series

1. Apr 18, 2010

annoymage

1. The problem statement, all variables and given/known data

find taylor series for $$\frac{x-1}{1+x}$$ at x=1

2. Relevant equations

3. The attempt at a solution

how to change this form

$$\frac{x-1}{1+x}$$

to something like this
$$\frac{1}{1+a}$$ or $$\frac{1}{1-a}$$

or should i do like this

$$\sum$$$$\frac{f^n(1)(x-1)^n}{n!}$$

and find fn(x) form?

2. Apr 18, 2010

justsof

$$\frac{x-1}{1+x} = \frac{x+1-2}{x+1} = ... ?$$

3. Apr 18, 2010

annoymage

owhhhhhh, im soo stupid ngahahah, thank you thank you