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Q)Let x + y =1 and ax+by=1 be two a b variable lines and a,b be parameters such that a 2 +b 2 =ab,then the locus of point of intersection of the lines is a)x 2 +y 2 +xy+1=0 b)x 2 +y 2 -xy+1=0 c)x 2 +y 2 +xy-1=0 d)x 2 +y 2 -xy-1=0

Q)Let x + y =1 and ax+by=1 be two    a    b 
variable lines and a,b be parameters such that a2+b2=ab,then the locus of point of intersection of the lines is
a)x2+y2+xy+1=0
b)x2+y2-xy+1=0
c)x2+y2+xy-1=0
d)x2+y2-xy-1=0 

Grade:11

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