I need to classify a bunch of differential equations and this one has me stuck... 3x+1=4t Would this be zeroth order? Or should I just call it a quadratic equation? Also, I need to identify the homogeneous parts of these equations. I know what a homegeneous diffeq is, but how would I identify the homogeneous part of a non-homogeneous equation? 2(dx/dt) +3x+1=4t Would the homogeneous part just be: 2(dx/dt)+3x? 2sin(dx/dt)+3x+1=4t answer: 2sin(dx/dt)+3x? I'm stuck, any help would be a huge help.