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.
polar r=<1-t,t,2t-t^2>
polar r=<1-t,t,2t-t^2>
Natural Language
Math Input
Extended Keyboard