- #1

shrody

- 3

- 0

## Homework Statement

The exercise goes "Determine d^n*f/dx^n for the 2 exercises:"

a) f(x)=sin^4(x) + cos^4(x)

b) f(x)= x^n/(1-x)

## Homework Equations

## The Attempt at a Solution

The only idea i had was for the second example, where i think its right to use a rule from Leibniz but I'm not sure...