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Find The Equation Of The Tangent Line To The Curve Y=1+2x-x^3At The Point (1, 2)?

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    The derivative gives the slope at the point.
      y' = 2 - 3x^2
      y'(1) = 2 - 3 = -1
    The tangent line can be represented by the equation
      y = -x + constant  (slope-intercept form)
      x + y = constant    (standard form)
      x + y = 3    (the constant is 1+2 = 3)
    0 0

    Oddman 

    answered 3 weeks ago

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