dn Find a general formula for den by identifying a pattern in parts (a) through (c). To begin, calculate the first few derivatives, d dx d² dx² x-1 d³ dx3 x-1 d4 dx4 X 1 and look for a pattern. You may use factorial notation: n! = n(n-1)...1. For example, 3! = 3 2 16.

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