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

यदि अतिपरवलय \(16 x ^{2}-9 y ^{2}=144\) की नियता (directrix) \(5 x+9=0\) है, तो इसका संगत नाभिकेन्द्र है

  1. A \((5, 0)\)
  2. B \(\left( {\frac{5}{3},0} \right)\)
  3. C \((-5, 0)\)
  4. D \(\left( { - \frac{5}{3},0} \right)\)
Verified Solution

Answer & Solution

Correct Answer

(C) \((-5, 0)\)

Step-by-step Solution

Detailed explanation

\(\frac{{{x^2}}}{9} - \frac{{{y^2}}}{{16}} = 1\) \(a = 3,b = 4\) and \(e = \sqrt {1 + \frac{{16}}{9}} = \frac{5}{3}\) corresponding focus will be \(\left( { - ae,0} \right)\) i.e. \(\left( { - 5,0} \right)\).
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