% VTB9% % VTB9_1 solves for the natural frequencies, damping ratios, %        and mode shapes of a linear second order matrix (LSOM)%        form system.  (M,C,K)%        NOTE: VTB9_1 will be replaced by VTB4_3 after Fall 2000% VTB9_2 numerically integrates to find the unforced response %        of a system using Euler's method.  The system can%        be in state space or LSOM form.%        NOTE: VTB9_2 will be replaced by VTB1_2 after Fall 2000% VTB9_3 performs fourth Runge-Kutta integration on a set of%        equations described in a specified file.  The %        equations need not be linear.%        NOTE: VTB9_3 will be replaced by VTB1_3 after Fall 2000% VTB9_4 numerically integrates to find the forced response %        of a system using Euler's method.  The system can%        be in state space or LSOM form.%        NOTE: VTB9_4 will be replaced by VTB1_4 after Fall 2000