plot (cos(2*t)%2B2*cos(t)%2Csin(2*t)-2*sin(t) ) for t %3D 0 to t %3D 2*pi%2F3

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.