Homework Help: Math

Posted by Jenna on Wednesday, April 28, 2010 at 3:31am.

Suppose r(x) = 8(x)^(1/2) represents revenue and c(x) = 2(x)^2 represents cost, with x measured in thousands of units. Is there a production level that maximizes profit? If so, what is it?

Math - Reiny, Wednesday, April 28, 2010 at 8:39am
profit = revenue - cost
= 8√x - 2x^2

d(profit)/dx = 4/√x - 4x
= 0 for a max of profit

4/√x = 4x
x = 1

since x was measured in thousands,
they should have a production of 1000

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