1. Given parametric equations below, find dy/dx , equations ofthe tangent and normal line at the given point.
(a) x = t^2 , y = t^3?3t at t = 1
(b) x = cos(t), y = sin(2t) at t = ?/4
2. ) Given parametric equations below, find d^2y/dx^2 anddetermine the intervals on which the graph of the curve is concaveup or concave down.
(a) x = t^2 , y = t^3?3t
(b) x = cos(t), y = sin(2t)
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