Parviz F. answered • 11/27/13

Tutor

4.8
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Mathematics professor at Community Colleges

If you take Calculus marginal is the derivative, the value of change at a point(margin).

C( X) = X

^{2}- 100X + 8300 a) This is a quadratic function, the minimum value is @ - b/ 2a:

- ( -100) /2 = 50

b)

C( 50) = (50)

^{2}- 100(50) + 8300 = 5800 Another way, using Calculus:

a) dC/dx = 2x - 100 =50