Question

TC=3Qsquare+7Q+12,what is the marginal cost function?

Answer 1

Answer:

TC=3qsquare+7q+12

avg cost=tc/q

=3q+7+12/q

for q=3,so,

it is 20

marginal cost function =d(TC)/dq=6q+7

for q=3,it is 25