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

वक्र \(y =\left| x ^2-9\right|\) तथा रेखा \(y =3\) द्वारा परिबद्ध क्षेत्रफल है

  1. A \(4(2 \sqrt{3}+\sqrt{6}-4)\)
  2. B \(4(4 \sqrt{3}+\sqrt{6}-4)\)
  3. C \(8(4 \sqrt{3}+2 \sqrt{6}-9)\)
  4. D \(8(4 \sqrt{3}+\sqrt{6}-9)\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(8(4 \sqrt{3}+2 \sqrt{6}-9)\)

Step-by-step Solution

Detailed explanation

Area of shaded region \(=2 \int_{0}^{3}(\sqrt{9+y}-\sqrt{9-y}) d y+2 \int_{3}^{9}(\sqrt{9-y}) d y\) \(=2\left[\int_{0}^{3}(9+y)^{1 / 2} d y-\int_{0}^{3}(9-y)^{1 / 2} d y+\int_{3}^{9}(9-y)^{1 / 2} d y\right]\)…
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