If the lengths of the transverse axis and the latus rectum of a hyperbola are 6 and 83 respectively, then, the equation of the hyperbola is ________

MHT CET · Maths · Hyperbola

If the lengths of the transverse axis and the latus rectum of a hyperbola are $6$ and $\frac{8}{3}$ respectively, then, the equation of the hyperbola is ________

A $4 x^{2} - 9 y^{2} = 72$
B $4 x^{2} - 9 y^{2} = 36$
C $9 x^{2} - 4 y^{2} = 72$
D $9 x^{2} - 4 y^{2} = 36$

Verified Solution

Answer & Solution

Correct Answer

(B) $4 x^{2} - 9 y^{2} = 36$

Step-by-step Solution

Detailed explanation

Given:

2 a = 6

and

\frac{2 b^{2}}{a} = \frac{8}{3}

Hence,

a = 3, b = 2

Then, equation of hyperbola is

\frac{x^{2}}{9} - \frac{y^{2}}{4} = 1

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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