Even and Odd Functions

Symmetry: even function?

The function $f(x)=x^4+2x$ pictured above is not even because the graph is not symmetric about the $y$-axis. For example the point $(-1,-1)$ does not reflect onto the point $(1,-1)$.

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"Original figure by Julien Coyne. Licensed CC BY-SA 4.0."

Julien Coyne CC BY-SA 3.0.

Even and Odd Functions

Symmetry: even function?

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