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Question

Consider the lines represented by the equation (x2+xyx)(xy)=0, forming a triangle, then
Column 1Column 2(a) Orthocentre of traingle(16,12)(b) Circumcenter(12+22)(c) Centroid(0,12)(d) Incenter(12,12)

A

a-r, b-s, c-p, d-q

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B

b-r, b-s, c-q, d-p

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C

a-s, b-r, c-q, d-p1

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D

a-s, b-r, c-p, d-q

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Solution

The correct option is D

a-s, b-r, c-p, d-q


Given lines are (x2+xyx)(xy)=0
x(x+y-1)(x-y)=0
or x=0, x+y-1=0 and x-y=0 forms triangle OAB as shown in the diagram.


<> Intersection points these line A(0,1), B(12,12), and O(0,0)
Triangle is right angled at point B, hence
Orthocentre is point B(12,12),
Also, circumcentre is the mid-point of OA which is (0+0)2,(0+1)2=(0,12)

Centroid is (0+12+03,0+12+13) or (16,12)
Also OA=b=1
OB=OC=12
Incenter is (0×12+12×1+0×1212+1+12,0×12+12×1+1×1212+1+12)=(12+22,12)

So, a-s, b-r, c-p, d-q

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