4. Evaluate the integral sin x cos x dx by two methods: first by letting u = sinx, and then by letting u = cosx and then explain why the two apparently different answers obtained in part (a) are really equivalent. 5. If you want to evaluate an integral by u-substitution, how do you decide what part of the integrand to choose for u?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 70E
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INTEGRAL CALCULUS (2 Items): Integration

4. Evaluate the integral sin x cos x dx by two methods: first by letting u = sinx, and then by letting u = cosx and then explain why the two apparently different answers obtained in part (a) are really equivalent.
5. If you want to evaluate an integral by u-substitution, how do you decide what part of the integrand to choose for u?
Transcribed Image Text:4. Evaluate the integral sin x cos x dx by two methods: first by letting u = sinx, and then by letting u = cosx and then explain why the two apparently different answers obtained in part (a) are really equivalent. 5. If you want to evaluate an integral by u-substitution, how do you decide what part of the integrand to choose for u?
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