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Q. Identify the conic whose equations are given in column-I
Column I (Equation of conic) Column II (Nature of conic)
A $x y+a^2=a(x+y)$ P Ellipse
B $2 x^2-72 x y+23 y^2-4 x-28 y-48=0$ Q Hyperbola
C $6 x^2-5 x y-6 y^2+14 x+5 y+4=0$ R Parabola
D $14 x^2-4 x y+11 y^2-44 x-58 y+71=0$ S line pair
E $4 x^2-4 x y+y^2-12 x+6 y+8=0$

Conic Sections

Solution:

Correct answer is (d) $A \rightarrow S ; B \rightarrow Q ; C \rightarrow S ; D \rightarrow P ; E \rightarrow S$