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14 Nov 2019
Notice that the curve given by the parametric equations x = 9 - t2 y = t3 -4t is symetric about the x-axis. (If t gives us the point (x, y): then -t will give (x, -y) ). At which x value is the tangent to this curve horizontal? At x = At which t value is the tangent to this curve vertical? At t =
Notice that the curve given by the parametric equations x = 9 - t2 y = t3 -4t is symetric about the x-axis. (If t gives us the point (x, y): then -t will give (x, -y) ). At which x value is the tangent to this curve horizontal? At x = At which t value is the tangent to this curve vertical? At t =