The first derivative f ' is given. Find all values of x that make the function a local minimum and a local maximum.f'(x) = (x - 4)2(x + 8)
A. Local maximum at x = 4
B. Local minimum at x = -8
C. Local minimum at x = -8; local maximum at x = 4
D. Local minimum at x = -8; local maximum at x = -4 and 4
Answer: B
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A. y = - 
x + 
B. y = - 
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A. - 
B. 
C. 3
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