Question

Question #70510

Answer 1

Call sec x = t

`f(x) = (t^2 - 3t + 2)/(t^2 - 1) = ((t - 1)( t - 2))/((t - 1)( t + 1)) =`

`= (t - 2)/(t + 1) = (sec x - 2)/(sec x + 1)`