.
Formally speaking, to solve such problem successfully, you need to know pre-requisites.
The pre-requisites are:
(a) knowing what a derivative is, in general;
(b) knowing derivatives of table functions;
(c) knowing the rule of taking derivative for a product of two functions
((f(x)*(g(x))' = f'(x)*g(x) + f(x)*g'(x)
and for a product of three functions
(f(x)*g(x)*h(x))' = f'(x)*g(x)*h(x) + f(x)*g'(x)*h(x) + f(x)*g(x)*h'(x).
Formally, that is all.
But, to be honest, in addition to it, you should have another pre-requisite,
which is the developed technique of solving more simple problems.
To develop such a technique, solve a series of more simple problems,
listed below. Take the derivatives of these functions
(a) ;
(b) ;
(c) .
As soon as you complete these problems, you will be ready to work on your
problem in the post. Then it will be not so difficult exercise for you.
