Question: Sketch the curve by using the parametric equations to plot points. Indicate with an arrow the direction in which the curve is traced as increases.

Sketch the curve by using the parametric equations to plot points. Indicate with an arrow the direction in which the curve is traced as increases.
a. x = t2 +t, y= t 2 - t, -2 ≤ t ≤ 2
b. x = cos2 t, y = 1 - sin t, 0 ≤ t ≤ π /2

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