Tardigrade
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Tardigrade
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Mathematics
The equation 3x2 + 2hxy + y2 = 0 represents a pair of st. lines passing through the origin. The two lines are
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Q. The equation $3x^2 + 2hxy + y^2$ = 0 represents a pair of st. lines passing through the origin. The two lines are
A
real and distinct if $h^2 > 3$
B
real and distinct if $h^2 > 9$
C
real and coincident if $h^2 = 3$
D
real and coincident if $h ^2 > 3$.
Solution:
Correct answer is (d) real and coincident if $h ^2 > 3$.