wtrench's blog

The following  items can  be downloaded  free of  charge from  Digital.Commons@Trinity:

1. ELEMENTARY DIFFERENTIAL EQUATIONS

http://digitalcommons.trinity.edu/mono/8/,

previously published by  Brooks/Cole  Thomson Learning, 2000,

2. ELEMENTARY DIFFERENTIAL EQUATIONS WITH BOUNDARY VALUE PROBLEMS,

http://digitalcommons.trinity.edu/mono/9/,