answer please so that i will have a g

I. Evaluate the following: 1.) if f(x) = cos2x - 4xsinx, find a.) 35" b.) f ( ) c.) f (-4) 2.) if f(x) = sinx + 4 cosx , find a.) f (7) b. ) f ( V/99) c c.) f (V32 + 52) 3.) if f(x) = In x, find f(2)+f(3)