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Math Help - derivative of tan3x

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    derivative of tan3x

    is the Derivative of tan3x = tan3?
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    Re: derivative of tan3x

    What makes you think that?

    Use the chain rule and see.
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    Re: derivative of tan3x

    oh, Is it  3sec^{2}3x ?
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    Re: derivative of tan3x

    Yes!
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    Re: derivative of tan3x

    Quote Originally Posted by Tweety View Post
    is the Derivative of tan3x = tan3?
    If it's \displaystyle \begin{align*} \left( \tan{3} \right) x \end{align*}, then you are correct. More likely though, it's \displaystyle \begin{align*} \tan{(3x)} \end{align*} which has derivative \displaystyle \begin{align*} 3\sec^2{(3x)} \end{align*}.
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