Sorry I made a mistake about the forum. I tried to delete it but I dont see where to do it pleas redirect this post in homework help/math Hi , please can I have your help? x^2+2 and x^2-2 are fundamental set of solutions of a second order ODE. find the ODE. form:y''+p(x) y'+ q(x) y=0. I tried to replace the two solutions in the equation but because those solutions have exact same first and second derivatives, I found p(x)=q(x)=0 !!!! Can you help me to find p(x) and q(x)? Thank you B.