90
Question
Evaluate ∫sin3xcos4xdx
Evaluate ∫sin3xcos4xdx
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Solution
I=12∫2cos 4x sin 3x dx
=12∫(sin 7x−sin x)dx
=12[−cos 7x7+cos x]+c
I=12∫2cos 4x sin 3x dx
=12∫(sin 7x−sin x)dx
=12[−cos 7x7+cos x]+c
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