calculus

a.Find the slope of the tangent line to the curve y=9-2x^2 at the point (2,1)

b.Find an equation of this tangent line.

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asked by josh
  1. as you know, the slope of the tangent line is just the derivative. So,

    y'(x) = -4x
    giving us
    y'(2) = -8

    and now we have a point and a slope, so the line is

    y-1 = -8(x-2)

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    posted by Steve

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