Can these please be solved on paper with a step by step explaination, and answer given in Taylor series format

1. Find the Taylor series centered at the given value a by any methods and its Radius of Convergence: a) f(x) = 1 - 472: 0=0 b) f(x) = = c) g(x) = er-1 , a = -1 d) f(x) = > cos 1 0=0