Energy Methods For Initial –Boundary String Problem
Initial- Boundary String Problem
Weak Solution
Sobolev Spaces
Galerkin's Method
Energy Estimate
We study one example of hyperbolic problems it's Initial-boundary string problem with two ends. In fact we look for the solution in weak sense in some sobolev spaces. Also we use energy technic with Galerkin's method to study some properties for our problem as existence and uniqueness