Trigonometric Substitution Problem 3 (Calculus 2)

This is a really good trigonometric substitution problem that tends to appear on tests and exams. After using a tangent substitution we're left with a trig. integral that looks difficult. However, it's actually pretty simple once we use a fundamental technique: rewriting everything in terms of sines and cosines. After that it's a simple substitution and the usual work for converting back to x using a conversion triangle.

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Music By: "After The Fall"
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