APFIVE Applying Integration by Parts
$$\displaystyle \int x^2 \sin x\, dx = $$
A
$$x^2 \sin x + 2 \int x \cos x\, dx$$
B
$$-x^2 \cos x + 2 \int x \cos x\, dx$$
C
$$-2x \cos x + \int x^2 \cos x\, dx$$
D
$$-\dfrac{1}{3} x^3 \cos x + C$$
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