Evaluate the integral: O x = (A) Which trig substitution is correct for this integral? 7 X = x = x = 49 9 1 7 sin(0) 3 3 -sec (0) sec (0) S sec (0) sec (0) 9x² - 49 x3 -dx (B) Which integral do you obtain after substituting for x? Note: to enter , type the word theta. de (C) What is the value of the above integral in terms of ? (D) What is the value of the original integral in terms of x? + C + C

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