Recent content by mike_

Is trial and error the only way to discover the solution y=e^rx? Are the equations separable?

Thanks for the replys. What I am looking for is how to find the solution without knowing it in the first place. A and B are constants. rock.freak667 mentioned y=e^rx which also requires euler's formula to solve the equations. I don't understand this method and would like an easy to...

Hello. Where can I find proofs for the solution of d. equations? I can find the solutions but I cannot find the proofs in any textbook. Specifically, how can I prove the solution for: y''+ay=0 y''+ay'+by=0 Thank you.