The Goal

Find

The Mistake

Find the mistake:

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The Correction

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An Explanation

An exponential function is not a power function, so the power rule can not be used to find its derivative. A power function has the independent variable (x in this context) in the base of the function, as in x². An exponential function has the independent variable in the exponent of the function, as in 2^x. Use the formula for the derivative of an exponential function in this case!