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JEE Mains · Maths · STD 11 - 10.1 circle and system of circle

एक वृत \(y\)-अक्ष तथा रेखा \(x + y =0\) दोनों को स्पर्श करता है तब इसके केन्द्र का बिन्दुपथ होगा-

  1. A \(y=\sqrt{2} x\)
  2. B \(x=\sqrt{2} y\)
  3. C \(y ^{2}- x ^{2}=2 xy\)
  4. D \(x^{2}-y^{2}=2 x y\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(x^{2}-y^{2}=2 x y\)

Step-by-step Solution

Detailed explanation

Let \((h, k)\) is centre of circle \(\left|\frac{ h - k }{\sqrt{2}}\right|=| h |\) \(k ^{2}- h ^{2}+2 h k =0\) \(\therefore\) Equation of locus is \(y ^{2}- x ^{2}+2 xy =0\)
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