Common Calculus Mistakes
Chain Rule: Power Rule

The Goal

Find

goal


The Mistake

Find the mistake:

mistake

Need a hint? Look carefully at the red part:

mistake


The Correction

correction


An Explanation

Take care when subtracting fractions, especially when negative numbers are involved. In this case the result of 1/3 - 1 is 1/3 - 3/3 = (1-3)/3 = -2/3.

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