Question: In Problems a to b, approximate the values of x that give maximum and minimum values of the function on the indicated intervals. a. f(x)

In Problems a to b, approximate the values of x that give maximum and minimum values of the function on the indicated intervals.
a. f(x) = x4 + x3 + x2 + x; [-1, 1]
b. f(x) = x3 + 1 / x4 + 1; [-4, 4]

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