The equation of family of curves for which the length of the normal is equal to the radius vector is

The equation of family of curves for which the length of the normal is

1.	The equation of family of curves for which the length of the normal is equal to the radius vector is
A.	\[{{y}^{2}}\pm {{x}^{2}}=k\]
B.	\[y\pm x=k\]
C.	\[{{y}^{2}}=kx\]
D.	None of these
Answer» B. \[y\pm x=k\]

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The equation of family of curves for which the length of the normal is equal to the radius vector is

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