xy = e(x – y)
16 Find the derivative of the function given by f(x) = (1 + x) (1 + x2) (1 + x4) (1 + x8)
and hence find f′(1) 17 Differentiate (x2 – 5x + 8) (x3 + 7x + 9) in three ways mentioned below:
(i) by using product rule
(ii) by expanding the product to obtain a single polynomial