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Math Help - local max

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    local max



    at what value of t does the local max occur?
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    Quote Originally Posted by dat1611 View Post


    at what value of t does the local max occur?
    f'(t) = \frac{t^2 + 10t + 24}{1 + \cos^2{t}} = \frac{(t+4)(t+6)}{1 + \cos^2{t}}

    f'(t) = 0 at t = -6 and t = -4

    at t = -6 , f'(t) changes sign from positive to negative

    at t = -4 , f'(t) changes sign from negative to positive

    so ... where is the relative max located?
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