Q.
Equation,2x2-5xy+2y2=0 represents two sides of a triangle whose centroid is (2,3) then area of triangle is
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a
2
b
6
c
18
d
0
answer is B.
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Detailed Solution
Split the given equation 2x2-5xy+2y2=0 as 2x-y=0 and x-2y=0General points on both lines are l,2l,2m,mHence, the vertices of the triangle are 0,0,l,2l,2m,m is l+2m3,2l+m3=2,3Equate corresponding co - ordinates and then solve for L , M We get l=4,m=1The vertices of triangle are (0, 0), (4, 8), (2, 1)The area of the triangle formed by the above vertices is 12|(4−16)|=6 square units
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