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Find the Directrices of the Hyperbola 81x216y2=129681 x ^ { 2 } - 16 y ^ { 2 } = 1296

Question 31

Multiple Choice

Find the directrices of the hyperbola.
- 81x216y2=129681 x ^ { 2 } - 16 y ^ { 2 } = 1296


A) y=±8197\mathrm { y } = \pm \frac { 81 } { \sqrt { 97 } }
B) y=±1697y = \pm \frac { 16 } { \sqrt { 97 } }
C) x=±1697x = \pm \frac { 16 } { \sqrt { 97 } }
D) x=±8197x = \pm \frac { 81 } { \sqrt { 97 } }

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