/* ************************************************************************* */
/*                        Batch file P_FHNBIS.DAT                            */
/* ************************************************************************* */

/* Comment:
To use the simplification suggested by Kruskal the file needs to 
contain the following two lines: 

do_simplification: true;
prefer_variable:x;
*/

/* The FITZHUGH-NAGUMO equation with extra term  b f f_x:  */

eq : ftx[1,0](t,x)-ftx[0,2](t,x)+f*(1-f)*(a-f)+b*f*ftx[0,1](t,x); 

/* where a and b are arbitrary real constants */

/* ************************ END of P_FHNBIS.DAT ************************** */