What is the range and codomain
The codomain is the set of values that could possibly come out and is actually part of
the definition of the function. However, the range is the
set of values that actually do come out.
What is an odd function
f(x) = -f(-x)
What is an even function
f(x) = f(-x)
What is a monotonic increasing function
if f(x) <= f(y) for all x < y in the domain
What is a monotonic decreasing function
If f(x0 >= f(y) for all x < y