Question

What is the integral of `ln (x)/x^2`?

Answer 1

Use the Integration by Parts formula.

`int udv= uv-int vdu`
let u = lnx
du = `1/x`

dv = `x^2`
v= `x^3/3`

Plug these back in the formula and integrate.
Final answer: `lnx*x^3/3-1/9x^3`