Decide if the given value of x is a critical number for f, and if so, decide whether the point is a relative minimum, relative maximum, or neither.f(x) = -x2 - 16x - 64; x = 8
A. Not a critical number
B. Critical number but not an extreme point
C. Critical number, relative minimum at (8, -144)
D. Critical number, relative maximum at (8, -144)
Answer: A
Mathematics
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