Function: sum(gradient[1](product(numbers('epe') if numbers('epe') if numbers('xyy') > numbers("xxr") else numbers("yyy") > numbers('xyy') else numbers("xxr"), numbers('epe') if numbers("yyy") > numbers("xxr") else numbers('xyy'))), product(numbers('xyy') if numbers('epe') > numbers("xxr") else numbers("yyy") if numbers('epe') > numbers('xyy') else numbers("xxr"), numbers("xxr") if numbers('epe') > numbers('xyy') else numbers("yyy")))
