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Math
Calculus
Derivatives and Integrals
Anti-Derivatives and Integration
Computing Integrals
Integration Techniques
Integration by Substitution
Extension: Integration by Tangent Half-Angle Substitution
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The Tangent Half-Angle Substitution The substitution u=tanx2u = \tan{\frac{x}{2}}u=tan2x has been called by Spivak "the world's sneakiest substitution". Suppose your goal is t…
By Andrew Machkasov, Alex Federspiel
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