Which of the following is equivalent to ∫0π/2sin3(x)dx\int_0^{\pi/2} \sin^3(x) dx∫0π/2sin3(x)dx?
∫0π/2(1−cos2(x))sin(x)dx\int_0^{\pi/2} (1-\cos^2(x))\sin(x) dx∫0π/2(1−cos2(x))sin(x)dx
∫01(1−u2)du\int_0^1 (1-u^2) du∫01(1−u2)du
23\frac{2}{3}32
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