Function: minus(gradient[2](sum(numbers("yxx"), numbers('ryy'))) if numbers('ryy') > sum(numbers("yxx"), numbers('ryy')) else numbers("yxx") if numbers("yxx") > sum(numbers("yxx"), numbers('ryy')) else gradient[2](sum(numbers("yxx"), numbers('ryy'))), sum(numbers("yxx"), numbers('ryy')) if gradient[2](sum(numbers("yxx"), numbers('ryy'))) > numbers('ryy') else numbers("yxx"))
