Function: gradient[1](product(numbers('ryy'), numbers("yxx"))) if logn(gradient[1](product(numbers('ryy'), numbers("yxx")))) > abs(logn(gradient[1](product(numbers('ryy'), numbers("yxx"))))) else gradient[1](product(numbers('ryy'), numbers("yxx"))) if abs(logn(gradient[1](product(numbers('ryy'), numbers("yxx"))))) > product(numbers('ryy'), numbers("yxx")) else logn(gradient[1](product(numbers('ryy'), numbers("yxx"))))
