Function: gradient[1](invert(numbers("per")) if numbers("yyy") if numbers("per") > invert(numbers("per")) else numbers('rep') > numbers("yyy") else numbers("per") if invert(numbers("per")) if numbers("per") > numbers("yyy") else numbers('rep') > invert(numbers("per")) else gradient[2](invert(numbers("per")) if numbers('rep') if numbers("yyy") > numbers("per") else invert(numbers("per")) > numbers("yyy") else numbers("per")))
