The differential equation of the family of parabola with focus at the origin and the x-axis an axis, is

The differential equation of the family of parabola with focus at the origin and the X -axis as axis is

The differential equation of the family of parabolas with focus at the origin and the X-axis as axis, is

The differential equation of the family of parabolas with focus at the origin and the X-axis as axis, is

If m and n are respectively the order and degree of the differential equation of the family of parabolas with focus at the origin and X-axis as its axis , then mn-m + n=

If m and n are respectively the order an degree of the differential equation of the family of parabolas with focus at the origin and X-axis as its axis, then mn-m+n=

If m and n are respectively the order and degree of the differential equation of the family of parabolas with focus at the origin and X-axis as its axis , the mn-m + n=