A) An ellipse
B) A pair of straight lines
C) A hyperbola
D) None of these
Correct Answer: C
Solution :
Obviously \[{{h}^{2}}>ab\] and\[\Delta =(1)\,(1)\,(2)+2(2)\,(1)\,(2)-(1)\,{{(2)}^{2}}-(1)\,{{(1)}^{2}}-2{{(2)}^{2}}<0\] Hence it is a hyperbola.
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