Linearize systems of ODEs to State Space around an operating point

Converts MIMO ODE system to A.B.C and D matrices..

The function ODE2SS.m uses the symbolic toolbox (tested in Matlab 2015) to linearize the system to State Space around a given operating point. An example of how to utilize the function is given in the file TestODE2SS.m for a wastewater system example. A word file that provides the explanation of the MIMO system is provided. The function was written by Adrian Lutchman and the example system provided from the course notes of Dr. Brian Aufderheide. Options are provided for displaying the result of the function in the command window and for creating function files that calculate the matrices as well as an option for the matrix that is to be generated. For the first two option a 1 means yes and a 0 means no. Please cite the authors when using this function for publication.