If equation ax2+2hxy+by2+2gx+2fy+c=0 represents a rectangular hyperbola, then
A
Δ≠0,h2>ab,a+b=0
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B
Δ≠0,h2<ab,a+b=0
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C
Δ≠0,h2=ab,a+b=0
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D
Δ≠0,h2<ab,a+b≠0
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Solution
The correct option is AΔ≠0,h2>ab,a+b=0 It is fundamental concept that for equation ax2+2hxy+by2+2gx+2fy+c=0 to represents a rectangular hyperbola it has to satisfy following condition, Δ=abc+2fgh−af2−bg2−ch2≠0,h2>ab and a+b=0