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

વર્તુળ \(2 x ^2+2 y ^2-(1+ a ) x -(1- a ) y =0\) પર બિંદુ \(P\left(\frac{1+a}{2}, \frac{1-a}{2}\right)\) માંથી દોરેલ બે ભિન્ન જીવાઓને દુભાગે તેવી \(a^2\)ની તમામ કિંમત નો ગણ \(........\) છે.

  1. A \((8, \infty)\)
  2. B \((4, \infty)\)
  3. C \((0,4]\)
  4. D \((2,12]\)
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Answer & Solution

Correct Answer

(A) \((8, \infty)\)

Step-by-step Solution

Detailed explanation

\(x ^2+ y ^2-\frac{(1+ a ) x }{2}-\frac{(1- a ) y }{2}=0\) \(\text { Centre }\left(\frac{1+ a }{4}, \frac{1- a }{4}\right) \Rightarrow( h , k )\) \(P \left(\frac{1+ a }{2}, \frac{1- a }{2}\right) \Rightarrow(2 h , 2 k )\) Equation of chord \(\Rightarrow T=S_1\)…
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