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Discussion

Mathematics Preparation for MCA Entrance
(28)

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The equation ax2 + by2 + 2hxy + 2gx + 2fy + c = 0 represents a circle, if

 
a = b, h = 0
a = b ≠ 0, h = 0
a = b ≠ 0, h = 0, g2 + f2 - c > 0
a = b ≠ 0, h = 0, g2 + f2 - ac > 0

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Abhishek Kumar

Correct answer is option(D).