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The equation (x^2)/(1-r)-(y^2)/(1+r)=1,r...

The equation `(x^2)/(1-r)-(y^2)/(1+r)=1,r >1,` represents an ellipse (b) a hyperbola a circle (d) none of these

A

an ellipse

B

A hyperbola

C

a circle

D

None of these

Text Solution

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The correct Answer is:
B
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