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11-22.
  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 ✎

Use u-substitution. Let u = sec(x).

cos2(x) – sin2(x) = cos(2x)

Use u-substitution. Let u = sin(2x).

Note: Given dx, x is the only variable.

The integrand is a multiple of an inverse trigonometric function. Which one?