Shouldn't it be ? If so, wouldn't you calculate the definite integral ?
My calculator returns so if my reasoning is correct then the answer is $4,500.
Suppose that a company's marginal revenue from the manufacture and sales of eggbeaters is dr/dt = 2- 2/(x+1)^2 where r is measured in thousands of dollars and x in thousands of units. How much money should a company expect from a production run of 3 thousand eggbeaters?
I tried integrating it on my calculator and got 5998.000666