Question

What is the relationship between the MPL curve and the total product curve?

Answer 1

Relationship between MPL and TPL curve are :-

1. The relation between the marginal and total product curve comes throughout the study of economics in various topics like utility, revenue, consumption, cost etc.
2. The general relation between the total and the corresponding marginal is refelcted through the relation of MPL and TPL curve.
3. As per mathematical theories marginal product is the slope of the total product curve.
4. The MPL curve is positive is the TPL curve has a positive slope or upward sloping.
5. Similarly, if the TPL has a negative or downward sloping then the MPL also will be negative.
6. Also, if the TPL curve is horizontal or has a zero slope then MPL is zero too.
7. For any graph of MPL and the TPL, for the first few inputs the TPL increases therefore the MPL also will be positive and increasing.
8. For any graph of MPL and the TPL, for the next several inputs the TPL curve decreases therefore the MPL too decreases and flattens out.
9. For any graph of the MPL and the TPL, for the last few inputs the slope of TPL goes negative which makes the MPL curve also to go negative.
10. Due to the law of dimishing marginal utility bothe MPL and the TPL initialy increase then decrease.

From the above points it can be concluded that the realtion between the Total product curve and the marginal product curve is direct. The relation is not complicated and it can be easily understood.