Find the curve for which the perpendicular from the foot of the ordinate to the tangent is of constant length.

Find the cartesian equation of the curves for which the length of the tangent is of constant length.

Find the equation of the curve in which the perpendicular from the origin on any tangent is equal to the abscissa of the point of contact.

Find the equation of the curve in which the perpendicular from the origin on any tangent is equal to the abscissa of the point of contact.

The curve with the property that the projection of the ordinate on the normal is constant and has a length equal to a is

The curve with the property that the projection of the ordinate on the normal is constant and has a length equal to a is

The curve with the property that the projection of the ordinate on the normal is constant and has a length equal to a is

The curve with the property that the projection of the ordinate on the normal is constant and has a length equal to a is

The curve with the property that the projection of the ordinate on the normal is constant and has a length equal to a is

Find the curve in which the length of the normal varies as the square of the ordinate.