Prove that f must have at least one zero in the interval a


Question: (a) Show that the function f is continuous for all values of x in the interval [a, b] and

(b) prove that f must have at least one zero in the interval (a, b) by showing that f(a) and f(b) have opposite signs.

f(x) = x3 - 2x2 + 3x + 2; a = -1, b = 1

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Mathematics: Prove that f must have at least one zero in the interval a
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