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  •  The equation      <img alt="\mathrm{ \frac{x^2}{1-r}-\frac{y^2}{1+r}=1, r>1}" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Cmathrm%7B%20%5Cfrac%7Bx%5E2%7D%7B1

 The equation      \mathrm{ \frac{x^2}{1-r}-\frac{y^2}{1+r}=1, r>1}  represents 

Option: 1

a circle

 


Option: 2

a parabola


Option: 3

 an ellipse


Option: 4

none of these.


Answers (1)

best_answer

\mathrm{\text { As, } r>1,1-r<0 \text { and }-(1+r)<0 }
so, L.H.S. = negative, but R.H.S. = positive. So that is not possible.

Posted by

Pankaj Sanodiya

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