Q1. (i) Write the order of the differential of the family of circles x² + y²=a², where a (>0) is arbitrary constant.

(ii) Write the order of the differential equation of the family of parabolas y² = 4ax, where a is arbitrary constant.

(iii) Write the order of the differential equation of the family of parabolas y² = 4a (x - b), where a, b are arbitrary constants.

Solution