“…[30] [31][7] ξ(x, y) = 2x 2 yc 1 −x 2 c 6 )x + c 7 y 2 + c 8 y η(x, y) = c 4 y 6 + c 1 xy 4 + c 3 y 3 + c 2 xy + c 5 y , c 2 , c 3 , c 4 , c 5 , c 6 , c 7 , c 8 ∈ R.Then by changing the constants c 1 , c 2 , c 3 , c 4 , c 5 , c 6 , c 7 and c 8 we can obtain dierent sets of innitesimals for the given ODE. Let c 1 = 0, c 2 = 0, c 3 = 0, c 4 = 0, c 5 = 0, c 6 = 0, c 8 = 0 and c 7 = 1.…”