# Math Help - Reduction Formulae

1. ## Reduction Formulae

Hi , I am stuck on the second line of this question in the Mark Scheme ( Question and MS attached ) .
The first line is parts applied and applied again on line 2 but I'm confused with what 'u' and ' v' have been assigned the second time .
Thanks

2. ## Re: Reduction Formulae

Hi,

Again in the second line u = e^x (is integrated) and the second term is derivated

tell me if you have any doubt

3. ## Re: Reduction Formulae

Hi , thanks I worked through it OK , sometimes I find the mark schemes are not easy to follow .