Function: product(gradient[2](divide(square(numbers('yyx') if numbers("xyx") > numbers("per") else numbers("yxx")), numbers("xyx") if numbers('yyx') > numbers("per") else numbers("yxx"))), divide(square(numbers('yyx') if numbers("per") > numbers("yxx") else numbers("xyx")), numbers('yyx') if numbers("yxx") > numbers("per") else numbers("xyx")))
