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The College Mathematics Journal Volume 48, 2017 - Issue 4
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CLASSROOM CAPSULES

The Demise of Trig Substitutions?

David BetounesUniversity of Texas of the Permian Basin, Odessa, [email protected][email protected]
&
Mylan RedfernUniversity of Texas of the Permian Basin, Odessa, [email protected][email protected]
Pages 284-287 | Published online: 17 Nov 2017
 
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Summary

After decades of using trigonometric substitutions to compute certain types of integrals, we were led to an easy alternative to trigonometric substitutions while grading student work. These “u-square” substitutions may be the answer to every student's dream: No trigonometric functions are required (except sometimes the inverse tangent).

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