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Math Help - Instanteous Rate of Change

  1. #1
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    Post Instanteous Rate of Change

    Hi,
    I'm studying for my test right now, and I was thinking of possible questions that might be on the test... and then I came up with a question but I can't answer it. How could I possibly calculate the instanteous rate of change of an exponential function without graphing it?
    Thanks for the input.
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  2. #2
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    \frac{d}{dx} (a^x) = a^x \cdot \ln{a}
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  3. #3
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    How would I find it if my function was 4^x for example?
    Thanks again.
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  4. #4
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    substitute 4 for a
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