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MathsHardNumerical2021 · 27 Jul Shift 2

Q87.If ∫π0 (sin3 x)e−sin2 xdx =

What This Question Tests

This question requires advanced techniques in definite integration, specifically using trigonometric identities, substitution, and integration by parts for both sides of the equality, followed by comparing terms to find α and β.

Concepts Tested

Definite integrationTrigonometric identitiesIntegration by substitutionIntegration by partsComparing expressions

Formulas Used

∫(sin^3 x)e^(-sin^2 x) dx

sin^3 x = sin x (1 - cos^2 x)

∫u dv = uv - ∫v du

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