Function: gradient[2](mod(gradient[0](numbers("per")) if square(numbers('rrr') if numbers("per") > numbers("xxr") else gradient[0](numbers("per"))) > numbers('rrr') if numbers("per") > numbers("xxr") else gradient[0](numbers("per")) else numbers("per"), square(gradient[0](numbers("per")) if numbers("xxr") > numbers('rrr') else numbers("per"))))
