Hi How do i solve a 3. order ODE to a 2. order. I am using maple 10. It seems to me that i am only able to solve to 1. order via the context menu or via the dsolve command. I am a engineer student, and we often need to dsolve from 3. or 4. order down to 1. order including the ones inbetween. I hope you will be able to help me out. TIA Otto