What is \(\int \dfrac{dx}{sec^2({tan}^{-1}x)}\) equal to?

1.	What is \(\int \dfrac{dx}{sec^2({tan}^{-1}x)}\) equal to?
A.	sin-1 x + c
B.	tan-1 x + c
C.	sec-1 x + c
D.	cos-1 x + c
Answer» C. sec-1 x + c

Discussion