for

a. i get:

local max: 2.5*pi

local min: 1.5*pi

b. global max: 3.5pi

global min: 2pi/3

are a and b right?

c. how to do this?

d. by the fundamental theorem of calculas (for this question) g'(x)=f(x) so i will have to find the antiderivative of g'(x).. but whats the antiderivative of xsinx? i dont know how to get it..