Questions
The equation to the pair of lines perpendicular to the lines represented by the equation and passing through origin is then k =
a
-2
b
-4
c
4
d
2
detailed solution
Correct option is B
The combined equation of pair of lines which are perpendicular to the pair of lines ax2+2hxy+by2=0and passing through the origin is bx2−2hxy+ay2=0Hence, the combined equation of perpendicular lines to the lines represented by the equation x2+4xy+2y2=0 is 2x2−4xy+y2=0.Therefore, k=−4Talk to our academic expert!
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The two lines represented by are perpendicular to each other for
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