- #1
dylanhouse
- 42
- 0
Homework Statement
Find the intervals of increase and decrease of secx on the interval (-pi/2, 3pi/2).
Homework Equations
The Attempt at a Solution
I found the derivative and set it equal to zero to get the critical points:
f'(x)=sinx/cos^2x
0=sinx/cos^2x
0=sinx
x= 0 and pi (restricted by interval)
Now to find the intervals of increase and decrease I am lost? It says think about the unit circle?