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Mathematics
10 June, 23:57
Integrate sin^43x dx
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Amaris Graves
10 June, 23:59
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Sstarica the question is ∫ sin4 3x dx
substitute (cos x) ^2 = 1 - (sin x) ^2
∫ (1 - cos^2 (3x)) ^2 dx = ∫ (1-2 cos^2 u + cos^2 u) d u
1/15 ∫ 5 (3) sin^4 (3x) d x
= - cos^5 (3x) / 15 + C
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