# Algebra Examples

Determine if the function is odd, even, or neither in order to find the symmetry.

1. If odd, the function is symmetric about the origin.

2. If even, the function is symmetric about the y-axis.

To check if the function is odd, substitute in for and check if the resulting function is the opposite of original function. In other words, determine if .

Simplify each term.

Apply the product rule to .

Raise to the power of to get .

Multiply by to get .

The function is not odd because does not product the opposite function of . In other words, .

is not odd

is not odd

Since the function is not odd, it is not symmetric about the origin.

No origin symmetry

To check if a function is even, substitute in for and see if the resulting function is the same as the original. In other words, .

Simplify each term.

Apply the product rule to .

Raise to the power of to get .

Multiply by to get .

The function is even because the resulting function (after substituting in ) is equivalent to the original.

The function is even

The function is even

Since the function is even, it is symmetric about the y-axis.

Y-axis symmetry