Guezane-Lakoud Assia

Lyapunov inequality for a boundary value problem involving conformable derivative

We consider a boundary value problem involving conformable derivative of order $α,$ $1<α<2$ and Dirichlet conditions. To prove the existence of solutions, we apply the method of upper and lower solutions together with Schauder's fixed-point theorem. \ Futhermore, we give the Lyapunov inequality for the corresponding problem.