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Math Help - differentiating 3 functions

  1. #1
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    differentiating 3 functions

    Hi, is it possible to differentiate;

    -(1/3)ln|secx|.exp(x).sinx??

    do we go about doing this the same way as normal differentiation for example;
    first differentiate ln|secx| only and so on......?

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  2. #2
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    Use the product rule.

    The product is
    -\frac{1}{3}\ln |\sec x| \cdot e^x \sin x.

    Then, to differentiate [Math]e^x \sin x[/tex] use the product rule again.
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by mathsShOck View Post
    Hi, is it possible to differentiate;

    -(1/3)ln|secx|.exp(x).sinx??

    do we go about doing this the same way as normal differentiation for example;
    first differentiate ln|secx| only and so on......?

    yes, it can be differentiated. use the product rule for three functions.

    \frac d{dx}[fgh] = f'gh + fg'h + fgh'

    where f,g, \text{ and }h are functions of x
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  4. #4
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    Thank you people I got it now.
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