Function: square(sum(gradient[2](numbers("yxx") if numbers("yxx") > numbers('ryy') else numbers('xyy')), numbers("yxx") if numbers('ryy') > numbers('xyy') else numbers("yxx")) if gradient[2](numbers('xyy') if numbers("yxx") > numbers("yxx") else numbers('ryy')) > numbers("yxx") if numbers("yxx") > numbers('xyy') else numbers('ryy') else numbers("yxx"))
