Question

(Diff Eq) I don't quite understand this from my textbook example:

(x^2 + u^2 x^2)dx + (x^2 + ux^2) [u dx + x du ] = 0 ---->

x^2 (1+u)dx + x^3 (1-u)du = 0

I'm totally missing something here.

Answer 1

That last term should be (x^2 - ux^2)[u dx + x du]