Function: band pass(product(gradient[1](logn(numbers('yxr') if numbers('yxr') > numbers('rep') else numbers("xyx"))), logn(numbers('yxr') if numbers("xyx") > numbers('rep') else numbers('yxr'))) if numbers('yxr') if numbers('rep') > numbers('yxr') else numbers("xyx") > logn(numbers('yxr') if numbers('yxr') > numbers("xyx") else numbers('rep')) else gradient[1](logn(numbers('yxr') if numbers('yxr') > numbers('rep') else numbers("xyx"))))