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Question

The orthocentre of the triangle formed by the lines 2x+y=2 and 2x2+3xy−2y2=0 is

A
(43,23)
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B
(12,1)
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C
(0,0)
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D
(1,1)
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Solution

The correct option is C (0,0)
Given pair of lines is
2x2+3xy2y2=0
Here a+b=0
i.e. the lines are perpendicular.
So, the orthocentre lies on point of intersection of these lines. The pair of straight lines pass through the origin. Hence, the point of intersection is (0,0)
So, the orthocentre is (0,0)

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