The total cost c(x) of a firm is C(x)=0.005x³-0.7x²-30x+3000, where x is the output. Determine average cost (AC)and marginal cost (MC).

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Question. The total cost c(x) of a firm is C(x)=0.005x³-0.7x²-30x+3000, where x is the output. Determine average cost (AC)and marginal cost (MC).

Solution:
Here, C(x)=total cost=TC

Average cost= 









Marginal cost=


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