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1.
The differential equation of the family 
of curves, where 
are arbitrary constants, is
of curves, where are arbitrary constants, is
2.
satisfies which of the following differential equations
satisfies which of the following differential equations
3.
The order and degree of the differential equation 
are
are
4.
The order of the differential equation of all circles of radius 
, having centre on 
axis and passing through the origin, is
, having centre on axis and passing through the origin, is
5.
An integrating factor of the differential equation 
is
is
6.
The solution of 
is
is
7.
The differential equation of the curve for which the initial ordinate of any tangent is equal to the corresponding subnormal, is
8.
The solution of differential equation 
is
is
9.
The equation of family of curves for which the length of the normal is equal to the radius vector, is
10.
The equation of the curve in which the portion of 
-axis cut off between the origin and the tangent varies as the cube of the abscissa of the point of contact is
-axis cut off between the origin and the tangent varies as the cube of the abscissa of the point of contact is