So, remember we said that for constant flux case dTm by dx is also equal to dTs by dx that is also equal to dT by dx in the fully developed region right.
तो, याद रखें कि हमने कहा था कि स्थिर  प्रवाह मामले के लिए dTm by dx, dTs by dx के बराबर है जो कि पूरी तरह से विकसित क्षेत्र में dT by dx के बराबर है।