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9 + 4 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

\(\frac{d}{{dx}}{(ax + b)^n} = - na{(ax + b)^{n - 1}}\), where n is any rational number is called _____ rule.

Power Rule

Power and Chain Rule

Chain Rule

None of These