1.

Equation of the hyperbola whose directirx is \[2x+y=1\], focus (1, 2) and eccentricity \[\sqrt{3}\] is

A. \[7{{x}^{2}}-2{{y}^{2}}+12xy-2x+14y-22=0\]
B. \[5{{x}^{2}}-2{{y}^{2}}+10xy+2x+5y-20=0\]
C. \[4{{x}^{2}}+8{{y}^{2}}+8xy+2x-2y+10=0\]
D. None of these
Answer» B. \[5{{x}^{2}}-2{{y}^{2}}+10xy+2x+5y-20=0\]


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