Trigonometric Substitution
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1 学习目标
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2 学习视频
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1. What substitutions are sometimes used to transform integrals
involving
into integrals
that can be evaluated directly? Give an example of each case.
2. What restrictions can you place on the variables involved in the
three basic trigonometric substitutions to make sure the substitu-
tions are reversible (have inverses)?

