To evaluate the integral O of du √a² + u² u² du udu √a + bu Answer: u = What is the function u? What is du? Answer: du Answer: I = s = ln (u + √u²+ a²) + C 2dx 16+ 4x² 2dx √16+4x² which of the following formulas can be used? 2 36² 2 (3b²u²-4abu +8a²2) √a+bu + C 1563 (bu-2a)√a + bu + C Find the value(s) of a and b (if appropriate), and use the formula to evaluate the integral. [Use the letter 'C' for an arbitrary constant.] dx

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