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Match List-I with List-II

List-IList-II
(A) ∫π/6π/3cos⁡x dx\displaystyle\int_{\pi/6}^{\pi/3} \cos x \, dx(I) 00
(B) ∫−ππ(sin⁡61x+x123) dx\displaystyle\int_{-\pi}^{\pi} (\sin^{61}x + x^{123}) \, dx(II) 44
(C) ∫0π/211+tan⁡3x dx\displaystyle\int_{0}^{\pi/2} \dfrac{1}{1+\tan^3 x} \, dx(III) 3−12\dfrac{\sqrt{3}-1}{2}
(D) ∫−22(2−∣x∣) dx\displaystyle\int_{-2}^{2} (2 - \left\vert x \right\vert) \, dx(IV) π4\dfrac{\pi}{4}

Choose the correct answer from the options given below:

Solution

✅ Correct Option: 2

(A) sin⁡π3−sin⁡π6=3−12\sin\frac{\pi}{3}-\sin\frac{\pi}{6} = \frac{\sqrt{3}-1}{2}.

(B) the integrand is odd over a symmetric interval, so the value is 0.

(C) using the king property ∫0af(x)dx=∫0af(a−x)dx\int_0^{a}f(x)dx = \int_0^a f(a-x)dx, the integral is half of π2\frac{\pi}{2}, i.e. π4\frac{\pi}{4}.

(D) 2∫02(2−x)dx=42\int_0^2(2-x)dx = 4.

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