Unless otherwise specified, the domain of a function f is assumed to be the set of all real numbers x for which f(x) is a real number. (a) The function k is defined by k(x)=f(x)g(x). Find k′(0).

(b) The function m is defined by m(x)=f(x)2g(x) . Find m′(5) .

(c) Find the value of x for −1 less than x less than 2 such that
f'(x)=h′(x) .