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%204%20(1/4)%20x%20y%20(x%5E2%20-%20y%5E2)%20=%20(x%5E2%20%2B%20y%5E2)%5E2%20(sqrt(x%5E2%20%2B%20y%5E2)%20-%201)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random