2  Degree of a differential equation
To study the degree of a differential equation, the key point is that the differential
equation must be a polynomial equation in derivatives, i e , y′, y″, y″′ etc Consider the
following differential equations:
2
3
2
3
2
2
d y
d y
dy
y
dx
dx
dx
⎛
⎞
+
−
+
⎜
⎟
⎝
⎠
 = 0