The Goal

Find

The Mistake

Find the mistake:

Need a hint? Look carefully at the red part:

The Correction

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!