Question

How do you integrate `f(x)=sinx/x` using the quotient rule?

Answer 1

`int sinx/xdx = Si(x) + C`

Explanation:

`int sinx/xdx = Si(x) + C`

where `Si(x)` is a special function known as the Sine Integral

This is higher degree level mathematics, so I suspect your question should have been how do you differentiate `f(x)` !!