JEE Mains Model Paper 22

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Question : 89 of 90

Marks: +1, -0

The family of curves whose tangents form an angle of

π

4

with the hyperbola xy = K is

x2 + 2xy + y2 = c
y2 - xy - x2 = c
x2 - 2xy + y2 = c
y2 + xy - x2 = c

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