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.
x=3/4 cos(t )**3; y=sin(t)+2/3 cos(2 t)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random