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9-43.
  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 ✎

You should have the first integral committed to memory.
For the second integral, let u = 1 − x2.

This is an improper integral because the graph has a vertical asymptote at x = 0. Rewrite this integral using limits and two separate integrals before evaluating.

Rewrite the integrand using exponents. This is also an improper integral.