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BOUNDARY CONTROLLABILITY OF A LINEAR SEMI-DISCRETE 1-D WAVE EQUATION DERIVED FROM A MIXED FINITE ELEMENT METHOD

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Table 2: (Example 3) Numerical results obtained with the FDS, when ∆t/h = 7/8.
Figure 1: Spectra of the eigenvalue problem (6) (dots), the classical central finite difference discretization of (6) (circles) and the eigenvalue problem (16), associated to the mixed finite elements scheme, (crosses), when N = 40.
Figure 8: (Example 3) Control obtained with the FDS when h = 1/512 and ∆t/h = 7/8.

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