Question: Using the intermediate value theorem, determine, if possible, whether the function f has a real zero between a and b. a. f (x) = x3

Using the intermediate value theorem, determine, if possible, whether the function f has a real zero between a and b.
a. f (x) = x3 + 3x2 - 9x - 13; a = - 5, b = - 4
b. f (x) = x3 + 3x2 - 9x - 13; a = 1, b = 2
c. f (x) = 3x2 - 2x - 11; a = -3, b = - 2

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