Differentiate the following with respect to x
(i) y = (x - 1/x) (x2 - 1/x2)
(ii) y = (2x2 - 3x + 1)/√x
(i) y = x3 - x - 1/x + 1/x3
(ii) y = 2x3/2 - 3x1/2 + x-1/2
