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9-9.
  1. Examine the integrals below. Consider the multiple tools available for integrating and use the best strategy. After evaluating each integral, write a short description of your method. Homework Help ✎

Graph the function. What do you notice?

Use partial fraction decomposition to rewrite the integrand as a sum of fractions.

Use substitution.

Let u = cos–1(x). Then du = _____.

Recall that cos2(x) – sin2(x) = cos(2x).