Question 41605
P = -2x^2 + 20x -2 where x is the number of units produced in thousands.  How many units must be produced to obtain maximum profit?

The equation is a quadratic with a=-2, b=20, c=-2

The maximum for this function is at  x=-b/2a

-b/2a = -20/-4 = 5

5000 units must be produced to attain a maximum profit.

Cheers,
Stan H.