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Math Help - Differentiate and Function problem

  1. #1
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    Differentiate and Function problem

    Hello Friends,
    I have 2 problems,
    Here are they:
    1) Differentiate y w.r.t. x where
    y=e^(log tan x^4)^2
    2) For the following function, find a point of maxima and a point of minima if these exist:
    f(x)=17x^5-14x^3+44
    Thanks.
    harshal.
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  2. #2
    TD!
    TD! is offline
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    1) Let v = tan(x^4) and u = log(v), then y = e^uČ.
    Then by the chain rule: dy/dx = dy/du . du/dv . dv/dx

    2) Solve: df/dx = 0, check whether its zeroes are min/max.
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