Homework Answers
(3)
C(x) = x3 - 6x2 + 250
First derivative = dC(x)/dx = 3x2 - 12x
Setting first derivative to zero,
3x2 - 12x = 0
3x.(x - 4) = 0
Either 3x = 0, so x = 0 and C(x) = 0 - 0 + 250 = 250
Or x - 4 = 0, so x = 4 and C(x) = (4)3 - 6(4)2 + 250 = 64 - 96 + 250 = 218
NOTE: As HOMEWORKLIB Answering Policy, 1st question is answered.
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