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Define the concave upward and concave downward

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Reference no: EM131563292

Question: Find (a) the intervals where f is concave upward and the intervals where f is concave downward and (b) the inflection points of f. Express your answers accurate to four decimal places.

f(x) = -2.1x4 + 3.1x3 + 2x2 - x + 1.2

Reference no: EM131563292

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