Function: minus(gradient[2](numbers('yyx') if mod(numbers('yyx'), numbers('yxr')) > sum(mod(numbers('yyx'), numbers('yxr')), numbers('yyx')) if numbers('yyx') > mod(numbers('yyx'), numbers('yxr')) else numbers('yxr') else sum(mod(numbers('yyx'), numbers('yxr')), numbers('yyx'))), sum(mod(numbers('yyx'), numbers('yxr')), numbers('yyx')) if mod(numbers('yyx'), numbers('yxr')) > numbers('yyx') else numbers('yxr') if numbers('yyx') > mod(numbers('yyx'), numbers('yxr')) else sum(mod(numbers('yyx'), numbers('yxr')), numbers('yyx')))