Question

2.
A conic ax2 + 2hxy + by2 + 2gx + 2fy
+c=0 represents a hyperbola if A 0
and :
(
A)
ab <h2
(B)
ab = h2
(C)
ab > h2
(D)
None of these
Where A = abc + 2fgh - af? -bg? -ch?.
please help which one is correct answer ​

Answer 1

Answer:

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