TC=8,000+3Q+0.004Q2 so its marginal cost is thus MC=3+0.008Q
Here, Given TC (Total Cost) and we have to show MC (Marginal Cost) is equal to 3+0.008Q
Marginal cost is the increase or decrease in total production
cost if output is increased by one more unit.
The formula to obtain the marginal cost is
MC = Change in Total Cost / Change in Quantity.
Or
So as we know that TC is given here,
If TC = 8,000+3Q+0.004Q^2
So MC is just the differentiation of TC with respect to Q.
SOLVING IT
Differentiate TC with respect to Q,
We get,
0+3+2*0.004Q = MC
3+0.008Q = MC
Hence prove.
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