EXAMPLE: Sketch and identify the curve defined by the parametric equations x =
sin 2t, y = cos 2t 0 ? t ? 2? ... Thus the point (x, y) moves on an ellipse x2. 25. +
y2. 4. = 1 . 4. 2. 2. 4. 2. 1. 1. 2 x5cos(t), y2sin(t), 0t12Pi/6. EXAMPLE: Sketch and
identify the curve defined by the parametric equations x = t cost, y = t sin t t > 0. 2
... 
