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 (a)an ellipse (b) a hyperbola (c)a circle (d) none of these

The equation (x^2)/(1-r)-(y^2)/(1+r)=1,r >1, represents (a)an ell...
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The range of the function f(x)=(x^2-x)/(x^2+2x) is R (b) R-[1] (c) R={...
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The equation (x^2)/(1-r)-(y^2)/(1+r)=1,r >1, represents (a)an ell...
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The equation (y^2)/(1+r)-(x^2)/(1-r)=1 (a) represents a hyperb...
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If range of y=x/(1+x^2),AAxepsilonR is equal to (A) [-1,1] ...
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Equation (x^(2))/(r-2) + (y^(2))/(5-r) = 1 represents an ellipse if
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The equation x^(2)/(r-2)+y^(2)/(5-r)= 1 represents an ellipse if
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The equation (x^(2))/(1-r)+(y^(2))/(r-3)+1=0 represents an ellipse if ...
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If |r| gt 1, x = a + a/r + a/r^(2) + .......... infty, y = b - b/r + b...
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