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JEE Mains · Maths · STD 12 - 6. Application of derivatives

વક્ર \(x^{2}+2 x y-3 y^{2}=0\) ના બિંદુ \((2,2)\) આગળના અભિલંબનું ઉગમબિંદુથી લંબ અંતર મેળવો.

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

Answer & Solution

Correct Answer

(B) \(2 \sqrt{2}\)

Step-by-step Solution

Detailed explanation

\(x^{2}+2 x y-3 y^{2}=0\) \(\mathrm{m}_{\mathrm{N}}=\) slope of normal drawn to curve at \((2,2)\) is \(-1\) \(\mathrm{L}: \mathrm{x}+\mathrm{y}=4\) perpendicular distance of \(L\) from \((0,0)\) \(=\frac{|0+0-4|}{\sqrt{2}}=2 \sqrt{2}\)
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