• Feb 8th 2007, 11:48 AM
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?

thank you.
• Feb 8th 2007, 12:01 PM
ThePerfectHacker
Quote:

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 \$\displaystyle 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 \$\displaystyle f(-x)=-f(x)\$