∫cos^2(wt加 φ)sin(wt 加φ)dt

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∫cos^2(wt加φ)sin(wt加φ)dt∫cos^2(wt加φ)sin(wt加φ)dt∫cos^2(wt加φ)sin(wt加φ)dt∫cos^2(wt+φ)sin(wt+φ)dt=∫-cos^2

∫cos^2(wt加 φ)sin(wt 加φ)dt
∫cos^2(wt加 φ)sin(wt 加φ)dt

∫cos^2(wt加 φ)sin(wt 加φ)dt
∫cos^2(wt+φ)sin(wt +φ)dt
=∫-cos^2(wt+φ)/wdcos(wt +φ)
=-cos^3(wt+φ)/(3w)+C