HyperbolaEasy
Question
The equation of the conic with focus at (1, −1), directrix along x − y + 1 = 0 and with eccentricity √2 is-
Options
A.x2 − y2 = 1
B.x2 − y2 = 1
C.2xy − 4x + 4y + 1 = 0
D.2xy + 4x − 4y − 1 = 0
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