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.
plot .5j2(1.83x),.4j2(2.9x),.3j2(3.9x),-3.14<=x<=3.14
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random