Let C be the parametric curve defined by                         x(t) = t2 - 2;                         y(t) = t3 - 3t + 1: Determine if C is concave up or concave down at (-1; 3):

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Q: 3. Sketch the curve: y = (x²–1)(x+2) x-3

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A: Explained below

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A: x=t2,  y=t  for  -10≤t≤10

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