Primitive of Reciprocal of Secant of a x

Theorem

 * $\displaystyle \int \frac {\d x} {\sec a x} = \frac {\sin a x} a + C$

Also see

 * Primitive of $\dfrac 1 {\sin a x}$


 * Primitive of $\dfrac 1 {\cos a x}$


 * Primitive of $\dfrac 1 {\tan a x}$


 * Primitive of $\dfrac 1 {\cot a x}$


 * Primitive of $\dfrac 1 {\csc a x}$