Question

How do you differentiate `f(x)= 5ln(cosx/x)`?

Answer 1

`d/dx[5ln(cosx/x)]=(5x)/cosx*((-xsinx)-cosx)/x^2`

Explanation:

`d/dx[5ln(cosx/x)]=5*x/cosx*((x(-sinx)-cosx))/x^2`