The Inverse Secant Function

1. Start with the graph of y = cos x.

2. y = sec x = 1/cos x

3. Restrict the domain of y = sec x to a one-to-one region.

4. Reflect the graph across the line y = x.

The Derivative:

y = sec-1 x and its derivative.

last update April 14, 1998 by Jerry L. Stanbrough (jstanbro@venus.net)