The differential equation\[(1+{{y}^{2}})xdx-(1+{{x}^{2}})ydy=0\] Represents a family of:

Ellipses of constant eccentricity

Ellipses of variable eccentricity-

Hyperbolas of constant eccentricity

Hyperbolas of variable eccentricity

The differential equation\[(1+{{y}^{2}})xdx-(1+{{x}^{2}})ydy=0\] Repre

1.	The differential equation\[(1+{{y}^{2}})xdx-(1+{{x}^{2}})ydy=0\] Represents a family of:
A.	Ellipses of constant eccentricity
B.	Ellipses of variable eccentricity-
C.	Hyperbolas of constant eccentricity
D.	Hyperbolas of variable eccentricity
Answer» E.

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The differential equation\[(1+{{y}^{2}})xdx-(1+{{x}^{2}})ydy=0\] Represents a family of:

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