Integral trigonometri

∫ sin ax  dx = -(1/a) cos ax + C
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∫ (2 sin4x + 3 cos6x) dx
= -(2/4) cos4x + (3/6) sin6x + C
= -(1/2) cos4x + (1/2) sin6x + C
= (1/2) (sin6x - cos4x) + C