Function: minus(gradient[0](invert(numbers('yxr') if numbers('rep') > numbers('yxr') if numbers('rep') > numbers('rep') else numbers('rep') else mod(numbers('rep') if numbers('rep') > numbers('yxr') else numbers('rep'), numbers('yxr')))), invert(mod(numbers('rep') if numbers('rep') > numbers('rep') else numbers('yxr'), numbers('yxr')) if numbers('yxr') > numbers('rep') else numbers('rep') if numbers('rep') > numbers('rep') else numbers('yxr')))
