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07-03-2024
Mathematics

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Evaluate the integral: ∫ (21√(x² - 16) ) /(x⁴) dx. (A) Which trig substitution is correct for this integral? x = 4sec(θ) or x = 16sec(θ) or x = 21sin(θ) or x = 4sin(θ) or x = 16tan(θ) ?

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