Q.
The locus represented by the equation (x−y+c)2+(x+y−c)2=0 is
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a
a line parallel to x-axis
b
a point
c
a pair of straight lines
d
a line parallel of y-axis
answer is B.
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Detailed Solution
From the given equation we havex−y+c=0 and x+y−c=0 which representsthe point (0, c.)
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