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

एक क्षेत्र \(R =\left\{( x , y ) \in R ^{2}: x ^{2} \leq y \leq 2 x \right\}\) पर विचार कीजिए। यदि एक सरल रेखा \(y =\alpha\), क्षेत्र \(R\) के क्षेत्रफल को दोबराबर भागों में बांटती है, तो निम्न में से कौनसा सत्य है ?

  1. A \(\alpha^{3}-6 \alpha^{2}+16=0\)
  2. B \(3 \alpha^{2}-8 \alpha+8=0\)
  3. C \(\alpha^{3}-6 \alpha^{3 / 2}-16=0\)
  4. D \(3 \alpha^{2}-8 \alpha^{3 / 2}+8=0\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(3 \alpha^{2}-8 \alpha^{3 / 2}+8=0\)

Step-by-step Solution

Detailed explanation

\(\mathrm{y} \geq \mathrm{x}^{2} \Rightarrow\) upper region of \(\mathrm{y}=\mathrm{x}^{2}\) \(\mathrm{y} \leq 2 \mathrm{x} \Rightarrow\) lower region of \(\mathrm{y}=2 \mathrm{x}\) According to ques, area of \(\mathrm{OABC}=2\) area of \(\mathrm{OAC}\)…
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