Question

What is the derivative of `f(x)=-ln(1/x)`?

Answer 1

`f'(x) = 1/x`

Explanation:

`ln(1/x) = lnx^-1 = -lnx`

So,
`f(x) = -ln(1/x) = - - lnx = lnx`

And, `f'(x) = 1/x`