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

क्षेत्र \(A =\left\{( x , y ): \frac{ y ^{2}}{2} \leq x \leq y +4\right\}\) का क्षेत्रफल (वर्ग इकाइयों में) हैं 

  1. A \(\frac{{53}}{3}\)
  2. B \(18\)
  3. C \(30\)
  4. D \(16\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(18\)

Step-by-step Solution

Detailed explanation

\(y^{2}=2 x\) ...\((1)\) and \(x-y-4=0\) ....\((2)\) solving \(( 1)\) and \(( 2)\) \((x-y)^{2}=2 x\) \(\Rightarrow x^{2}-10 x+16=0\) \(\Rightarrow x=8,2\) and \(y=4,-2\) \(A = \int\limits_{ - 2}^4 {\left( {y + 4 - \frac{{{y^2}}}{2}} \right)dy} \)…
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