## anonymous 5 years ago derivative of negative cos?

1. anonymous

Do you know what the derivative of a regular cosx turns into?

2. anonymous

d/dx -cos(x)=sin(x)

3. anonymous

$\int\limits \sin(1-x) (2-\cos (1-x))^{4} dx$

4. anonymous

I would recommend using substitution for this problem. Let u=-cos(1-x) du=sin(1-x)dx like how mah1 said. Then this will make your integral easier to deal with.