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Math Help - Simple Question

  1. #1
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    Simple Question

    Is e a constant?
    D_x (e) = e^1(D_x 1)
    Derivative of e ---> will it equal to zero?

    THanks
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  2. #2
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    Quote Originally Posted by ^_^Engineer_Adam^_^ View Post
    Is e a constant?
    D_x (e) = e^1(D_x 1)
    Derivative of e ---> will it equal to zero?

    THanks
    The derivative of y=e is y'=0.
    Since it is a constant function its derivative is zero.
    Ah!
    But what is the derivative of y=\sqrt{e}.
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  3. #3
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    Quote Originally Posted by ThePerfectHacker View Post
    But what is the derivative of y=\sqrt{e}.
    Use the chain rule:

    \frac{d}{dx}\sqrt{e}=\frac{1}{2}\, \frac{1}{\sqrt{e}}\frac{de}{dx}=\frac{1}{2}\, \frac{1}{\sqrt{e}}\, 0=0

    RonL
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  4. #4
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    Quote Originally Posted by CaptainBlack View Post
    Use the chain rule:

    \frac{d}{dx}\sqrt{e}=\frac{1}{2}\, \frac{1}{\sqrt{e}}\frac{de}{dx}=\frac{1}{2}\, \frac{1}{\sqrt{e}}\, 0=0

    RonL
    I am just saying that, is because I once was teaching my classmates Calculus. Just the moment I explain the derivative of 'e' is zero and give them this problem they start doing this.
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