Absorbing Boundary Condition Absorbing boundary condition Absorbing boundary conditions Acoustic Wave Equation Banach spaces Chang Extent Analysis Method Chebyshev Polynomial Finite dierence equation Fuzzy Analytical Hierarchy Process Fuzzy Logic Numerical Solution Padé Approximation Reflection coefficient Two dimensional wave equation Two-dimensional Acoustic Waves Wave equation convergence metric metric cone norm ordinary differential equation of first order ortogonalitas-P resolvabilitas ortogonalitas ruang norm-n variational iteration method