Function: gradient[1](log(noise(minus(noise(numbers('epe')), numbers('epe'))), minus(noise(numbers('epe')), numbers('epe')))) if minus(noise(numbers('epe')), numbers('epe')) > log(noise(minus(noise(numbers('epe')), numbers('epe'))), minus(noise(numbers('epe')), numbers('epe'))) else noise(minus(noise(numbers('epe')), numbers('epe')))
