## Encyclopedia > July 6

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# July 6

July 6th is the 187th day of the year (188th in leap years) in the Gregorian Calendar, with 178 days remaining.

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 Integration by parts ... by parts again, with: u = ex; du = exdx v = -cos(x); dv = sin(x)dx Then: [itex]\int e^{x} \sin (x) \,dx = -e^{x} \cos (x) - \int -e^{x} \cos (x) \,dx = ...