**Derivative Rules for Combinations of Functions**
https://mathstat.slu.edu/~may/ExcelCalculus/sec-4-2DerivativesCombinationFunctions.html

In the last section we learned rules to symbolically differentiate some elementary functions. To summarize, we have established 4 rules. 🔗 Elementary Formulas: If f, ( x) = x n, then , f ′ ( x) = n ∗ x ( n − 1), for any real number . n. If , f ( x) = e x, then . f ′ ( x) = e x. If , f ( x) = a x, then . f ′ ( x) = a x ln ( a). If , f ( x) = ln

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