Even and Odd Functions
Even Functions
Odd Functions
𝑓𝑥=𝑥2+3
𝑓𝑥=𝑥3−4𝑥
Numerically: Plugging in opposite 𝑥-values gives identical 𝑦-values
Graphically: 𝑦-axis symmetry
Function Composition: 𝑓−𝑥=𝑓𝑥
Points: If 𝑎,𝑏 is on the graph, then −𝑎,𝑏 is also on the graph 
Numerically: Plugging in opposite 𝑥-values gives opposite 𝑦-values
Graphically: origin symmetry
Function Composition: 𝑓−𝑥=−𝑓𝑥
Points: If 𝑎,𝑏 is on the graph, then −𝑎,−𝑏 is also on the graph 