Question

1) Graph the parametric path using Slope-Direction diagram.
The curve is x = t^2,y = (t - 1)(t^2 - 4), for t, in [-3,3]
2) Find the length of the pay over the given interval.
(2cost - cost2t, 2sint - sin2t), 0 ≤ t ≤ π/2
Please give step-by-step. ​