Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
In Exercises 9-12, verify algebraically that the function is periodic and determine its period graphically. Sketch a graph showing two periods. 9.
f
(
x
)
=
cos
2
x
f(x)=\cos ^{2} x
f
(
x
)
=
cos
2
x
Browse the problem library