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JEE Mains · Maths · STD 12 - 8. Application and integration

પ્રદેશ \(A =\left\{(x, y): 4 x^2+y^2 \leqslant 8\right.\) અને \(\left.y^2 \leqslant 4 x\right\}\) નું ક્ષેત્રફળ ___ છે.

  1. A \(\frac{\pi}{2}+2\)
  2. B \(\pi+\frac{2}{3}\)
  3. C \(\pi+4\)
  4. D \(\frac{\pi}{2}+\frac{1}{3}\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\pi+\frac{2}{3}\)

Step-by-step Solution

Detailed explanation

\(A=\int_0^2 2 \sqrt{x} d x+2 \int_1^{\sqrt{2}} \sqrt{8-4 x^2} d x\) \(=\frac{8}{3}\left(x^{\frac{3}{2}}\right) \int_0^1+4 \int_1^{\sqrt{2}} \sqrt{2-x^2} d x\)…
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