1
\(x=2t^3+3t^2\), \(y=3t^2+6t\)
2
\(x=t^3-3t\), \(y=t^3-t^2-t+1\)
3
\(x=\sin t\), \(y=\dfrac{\cos^2t}{2-\cos t}\)
4
\(x=(1+\cos^2t)\sin t\), \(y=\sin^2t\cos t\)
5
\(x=(1+\cos t)\sin 2t\), \(y=\cos 2t\)
\(x=2t^3+3t^2\), \(y=3t^2+6t\)
\(x=t^3-3t\), \(y=t^3-t^2-t+1\)
\(x=\sin t\), \(y=\dfrac{\cos^2t}{2-\cos t}\)
\(x=(1+\cos^2t)\sin t\), \(y=\sin^2t\cos t\)
\(x=(1+\cos t)\sin 2t\), \(y=\cos 2t\)