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Find the equation of the hyperbola satisfying the given conditions: Foci (0, ±13), the conjugate axis is of length 24. - Mathematics

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Question

Find the equation of the hyperbola satisfying the given conditions:

Foci (0, ±13), the conjugate axis is of length 24.

Sum
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Solution

Foci (0, ±13), the conjugate axis is of length 24.

Here, the foci are on the y-axis.

Therefore, the equation of the hyperbola is of the form `y^2/a^2 - x^2/b^2 = 1`

Now foci are (0, ±13), c = 13.

Length of the conjugate axis is 24, 2b = 24 ⇒ b = 12

We know that a2 + b2 = c2

∴ a2 + 122 = 132

⇒ a2 = 169 - 144 = 25

Thus, the equation of the hyperbola is `y^2/25 - x^2/144 = 1`.

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Chapter 11: Conic Sections - Exercise 11.4 [Page 262]

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NCERT Mathematics [English] Class 11
Chapter 11 Conic Sections
Exercise 11.4 | Q 11 | Page 262
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