Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
y = cos(x) and y=cos(x/2) from 0 to 4pi
y = cos(x) and y=cos(x/2) from 0 to 4pi
Natural Language
Math Input
Extended Keyboard
