ExamBro
ExamBro
JEE Mains · Maths · STD 11 - 10.2 parabola,ellipse,hyperbola

माना वृत्त \(x ^2+ y ^2+ Ax + By + C =0\) बिन्दु \((0\),6) से गुजरता है तथा परवलय \(y = x ^2\) को बिन्दु \((2,4)\) पर स्पर्श करता है। तब \(A + C\) बराबर है \(..........\)

  1. A \(16\)
  2. B \(88 / 5\)
  3. C \(72\)
  4. D \(-8\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(16\)

Step-by-step Solution

Detailed explanation

\(x ^{2}+ y ^{2}+ Ax + By + C =0\) is passing through \((0,6)\) \(\Rightarrow 6 B + C =-36\) The tangent of the parabola \(y = x ^{2}\) at \((2,4)\) is \(4 x - y -4=0 \quad-(1)\) The tangent of circle \(x ^{2}+ y ^{2}+ Ax + By + C =0\) at \((2,4)\) is…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app