Q.
Equation of the line joining the foci of the parabolas y2=4xand x2=−4y
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a
x+y−1=0
b
x−y−1=0
c
x−y+1=0
d
x+y+1=0
answer is B.
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Detailed Solution
Foci of the parabolas are (1, 0) and (0, – 1) and the equation of the line joining them is y=x−1 or x−y−1=0
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