Thread: marginal cost/revenue to total cost / revenue

MR(Q) = 75 - Q^2
MC(Q) = 9+ 3Q^2
Fixed cost equals 10
Output is 10 units
I need to find TC and TR
i know i need to integrate but thats as far as i get.

integrating gives 75Q - 1/3Q^3+ c and 9Q + Q^3 + c

Originally Posted by molimoli

MR(Q) = 75 - Q^2
MC(Q) = 9+ 3Q^2
Fixed cost equals 10
Output is 10 units
I need to find TC and TR
i know i need to integrate but thats as far as i get.

integrating gives 75Q - 1/3Q^3+ c and 9Q + Q^3 + c

The first "c" is "fixed" cost- the cost that will be incurred no matter how many are produced. Knowing the marginal cost (the cost of "one more") will not tell you that.