Function: gradient[1](band pass(numbers("xxy") if numbers('epe') > numbers('xyy') else numbers('yxr'))) if numbers('epe') if numbers('xyy') > numbers("xxy") else numbers('yxr') > band pass(numbers('yxr') if numbers('xyy') > numbers('epe') else numbers("xxy")) else max(gradient[1](band pass(numbers('epe') if numbers("xxy") > numbers('yxr') else numbers('xyy'))), band pass(numbers('yxr') if numbers('epe') > numbers("xxy") else numbers('xyy')))
