Function: logn(gradient[2](cos(divide(numbers('epe'), numbers('yyx'))))) if gradient[2](cos(divide(numbers('epe'), numbers('yyx')))) > cos(divide(numbers('epe'), numbers('yyx'))) else divide(logn(gradient[2](cos(divide(numbers('epe'), numbers('yyx'))))), gradient[2](cos(divide(numbers('epe'), numbers('yyx')))))
