Equation of normal question (1 Viewer)

Arucerious · Aug 30, 2015

What is the equation of the normal to x=2t, y = t^2 at the point t=3. Not sure where to begin with this question. I know how to find the equation of the normal if I'm given a curve though like y=4x - x^2.

rand_althor · Aug 30, 2015

integral95 · Aug 30, 2015

Gradient of tangent at t = 3 is

$\frac{dy}{dx} = \frac{dy}{dt}. \frac{dt}{dx} = \\ \\ 2t.\frac{1}{2} = 3 \ \ \ \ $at t = 3$$

Now you can find the gradient of normal

Equation of normal question (1 Viewer)

Arucerious

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rand_althor

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integral95

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