The equation of the hyperbola whose directrix is $x + 2y = 1$, focus $(2, 1)$ and eccentricity $2$ will be
The equation of the hyperbola whose directrix is $x + 2y = 1$, focus $(2, 1)$ and eccentricity $2$ will be
- A
${x^2} - 16xy - 11{y^2} - 12x + 6y + 21 = 0$
- B
$3{x^2} + 16xy + 15{y^2} - 4x - 14y - 1 = 0$
- C
${x^2} + 16xy + 11{y^2} - 12x - 6y + 21 = 0$
- D
None of these
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- [JEE MAIN 2018]
The one which does not represent a hyperbola is
The one which does not represent a hyperbola is
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