1. The problem asks for the derivative of the function given in question 20. 2. Since the user did not provide the function from question 20, please supply the function or state the problem from question 20. 3. Once the function is provided, the derivative can be computed using standard differentiation rules such as power rule, product rule, quotient rule, or chain rule. 4. Please provide the explicit function from question 20 so I can help compute its derivative step-by-step.