You can put this solution on YOUR website! please help me
get the integral of sin(x-sin7x)dx
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Expand the integrand using sin(a-b) = sin(a)cos(b)-cos(a)sin(b) to get:
= int[sin(x)cos(7x)dx) - int[cos(x)sin(7x)dx]
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Note: d/dx cos(7x) = -7sin(7x)
Note: d/dx sin(7x) = 7cos(7x)
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Can you integrate the above using substitution?
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Cheers,
Stan H.
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