1. Supply the details needed to prove the integration by parts formula in the special case where F and G are continuously differentiable everywhere. 2. 3. Supply the details needed to prove the change of variable formula in the special case where F and G are differentiable everywhere. Let F(x)=|x| and G(x)= x sin, G (0) = 0. Does [F(G(x))G(x)dx = F(G(1))-F(G(0)) = |sin 1|?