If write the value of for x > 1.

8

If and y = sin^–1 (sin x), find

9

If π ≤ x ≤ 2π and y = cos^–1 (cos x), find

11

If f(0) = f(1) = 0, f’(1) = 2 and y = f(e^x) e^f(x), write the value of at x = 0.

12

If y = x|x|, find for x < 0.