# Math Help - Could you please teach me about even and odd functions

1. ## Could you please teach me about even and odd functions

Hello people

Could you please teach me with Easy words about even and odd functions, I know it has something to do with symmetry , but i don't even know what that word means, how can I know wheter a function is even or odd grapically as well algebraically?

thank you.

2. Originally Posted by jhonwashington
Hello people

Could you please teach me with Easy words about even and odd functions, I know it has something to do with symmetry , but i don't even know what that word means, how can I know wheter a function is even or odd grapically as well algebraically?
A function is even, iff it has symettry in the x-axis. Algebraically it means $f(-x)=f(x)$.

A function is odd, iff it has point symetrry in the origin. Meaning if you find the reflection in the x-axis and then the y-axis you get the same thing. Or the reflection in the y-axis and then x-axis.
Algebraically it means $f(-x)=-f(x)$