I used the setDiffEQ7Exact (exact differential equations) problems of the Rochester library a few years back with no problem. Now they all break down (in the exact cases) in the level_curve_check subroutine of PGdiffeqmacros.pl with error message
Can't use string ("") as a subroutine ref while "strict refs" in use at line 801 of [PG]/macros/PGdiffeqmacros.pl Died within main::level_curve_check called at line 55 of [TMPL]/rochester_problib/setDiffEQ7Exact/ur_de_7_2.pg
I wonder if there is a quick fix for this.
Andras
Bump:
Has anyone found a solution or workaround for this? We would like to continue to use these problems.
Danny
Has anyone found a solution or workaround for this? We would like to continue to use these problems.
Danny
For the problems in the Rochester DiffEQ7Exact set
I rewrote the problems so that they don't use level curves.
Simple function checking with possible parameters.
Andras
I rewrote the problems so that they don't use level curves.
Simple function checking with possible parameters.
Andras