Find the marginal cost functions for each of the following average cost functions. a) AC = 1.5Q + 4 + 46 𝑄 b) AC = 160 𝑄 + 5 - 3Q + 2Q2
Solutions
MC=dTCdQMC=\frac{dTC}{dQ}MC=dQdTC
TC=AC×QTC = AC \times QTC=AC×Q
a)AC=1.5Q+4+46Qa)AC = 1.5Q + 4 + 46Qa)AC=1.5Q+4+46Q
Differentiate the AC function
TC=1.5Q2+4Q+46Q2TC=1.5Q^{2}+4Q+46Q^{2}TC=1.5Q2+4Q+46Q2
MC=3Q+4+98QMC=3Q+4+98QMC=3Q+4+98Q
MC=101Q+4MC=101Q+4MC=101Q+4
b)AC=160Q+5−3Q+2Q2b)AC=160Q+5-3Q+2Q^{2}b)AC=160Q+5−3Q+2Q2
TC=AC×QTC=AC\times QTC=AC×Q
TC=160Q2+5Q−3Q2+2Q3TC=160Q^{2}+5Q-3Q^{2}+2Q^{3}TC=160Q2+5Q−3Q2+2Q3
MC=320Q+5−6Q+6Q2MC=320Q+5-6Q+6Q^{2}MC=320Q+5−6Q+6Q2
MC=314Q+5+6Q2MC=314Q+5+6Q^{2}MC=314Q+5+6Q2
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