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How to find this first + second derivative?

Stuck on this practice problem, forget the steps when the ln is thrown in there.

f(x) = √e^x ln(x)

The ln(x) is NOT under the square root sign.

Any help/advice would be greatly appreciated and helpful!

1 Answer

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  • Dave
    Lv 6
    7 years ago

    f(x) = √e^x ln(x)

    f(x) = e^(x/2) ln(x)

    f ' (x) = 1/2 e^(x/2) ln(x) + e^(x/2) / x

    f '' (x) = 1/2[1/2 e^(x/2) ln(x) + e^(x/2) / x] + -e^(x/2)/x^2 + 1/2 e^(x/2) / x <-----------------------------(answer)

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