We have a parametric curve x = - 6t + t^3 + 1, y = -2t − t^2
a) Sketch a graph of the curve (use technology to help)
b) Find the equation of the tangent line at t = –1
c) Find the value(s) of t where the tangent is horizontal.
d) Find the value(s) of t where the tangent is vertical.
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