Function: gradient[2](sum(log(product(mean(numbers("per") if numbers("xxy") > numbers('yxy') else numbers("per"), numbers('yxy')), numbers('yxy') if numbers("xxy") > numbers("per") else numbers("per")), mean(numbers("xxy") if numbers('yxy') > numbers("per") else numbers("per"), numbers('yxy'))), product(mean(numbers("per") if numbers("per") > numbers("xxy") else numbers('yxy'), numbers('yxy')), numbers('yxy') if numbers("per") > numbers("xxy") else numbers("per"))))
