Question

How do you integrate `(e^x)/x`?

Answer 1

For`x > 0`,

`inte^x/x dx`

`=int (1+x+x^2/(2!)+x^3/(3!)+...)/x dx`

`=C+lnx+x/(1!)+x^2/(2(2!))+x^3/(3(3!))+...+x^n/(n((n)!))+...`