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Math Help - Equation of the Tangent Line

  1. #1
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    Exclamation Equation of the Tangent Line

    For the function f(x) = x^2 + 2 * (tan x) - 2
    Find the equation of the tangent line to the graph of f(x) at the point (0,-2).

    If you have 6 mcflurries, and you buy another one, how many mcflurries do you have?
    Last edited by CaptainBlack; August 10th 2010 at 10:56 PM.
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  2. #2
    Senior Member eumyang's Avatar
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    f(x) = x^2 + 2 \tan x - 2

    Find f'(x). Then plug in 0 into the derivative to find f'(0), the slope of the tangent line at that point. Call this m. Then plug in your point (0, -2) and your slope (m) in to the equation of the line
    y = m(x - x_1) + y_1
    (where (x1, y1) represents your point).
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