Question

The weekly demand for the Pulsar 25-in. color console television is given by the demand equation
p=-0.06x+579
where p denotes the wholesale unit price in dollars and x denotes the quantity demanded. The weekly total cost function associated with manufacturing these sets is given by
C(x)=0.000004x^3-0.01x^2+400x+80000
where C(x) denotes the total cost incurred in producing x sets. Find the level of production that will yield a maximum profit for the manufacturer. Hint: Use the quadratic formula. (Round your answer to the nearest whole number.)

Answer 1

the max occurs when the first derivate is equal zero, right?

Answer 2

yes

Answer 3

the max is when the derivative equals 0

Answer 4

but the delta is <0 on 0.000012x^2-0.02x+400... this is not the correct way..

Answer 5

I don't understand wat u r talking about

Answer 6

I dont know how to help...sorry

Answer 7

its fine i solved it