दिहुनथाइ-फिथाइनि बे ओनसोलखौ लाथिखʼ ओनसोल बुङो , मानोना बे ओनसोलाव आबाद मावनायाव आबाद आगजुनि बिबां बांनायजों मुलामफायाबो बारायलाङो ।
This area of production-function is called irrational area , because in this area on doing production , on increasing the amount of production equipment , the amount of obtained profit also keeps increasing .