A4.1. (i) Prove by induction that log(1 + x) = (-1)n-1(n- 1)! dan (1 + x)n (-1

A4.1. (i) Prove by induction that dxn (ii) Hence obtain the Maclaurin expansion of log(l + x) . (iii) Deduce the Maclaurin series of log(l a;)