1. The problem statement, all variables and given/known data "Solve the following ODE's:" "3u+(u+x)u'=0" This is our first weeks homework and he went this through this so quickly in class. 2. Relevant equations None. x and u are both variables. 3. The attempt at a solution I know it is homogeneous and non linear. I tried v-substitution and just couldn't get a v to fit. Do i need to use the method of integration factor? Thanks guys!