Function: minus(gradient[2](product(sum(numbers("xyx") if numbers('xry') > numbers("xyx") else numbers('epe'), numbers("xyx")), numbers('epe') if numbers("xyx") > numbers('xry') else numbers("xyx"))), product(sum(numbers("xyx") if numbers('xry') > numbers('epe') else numbers("xyx"), numbers("xyx")), numbers("xyx") if numbers('epe') > numbers('xry') else numbers("xyx")))
