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cubic function

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a polynomial function in a single variable where the highest exponent of the variable is 3

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Cubic functions
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Graph of a cubic function with 3 real roots (where the curve crosses the horizontal axis—where y = 0). The case shown has two critical points. Here the function is f(x) = (x + 3x − 6x − 8)/4.

In mathematics, a cubic function is a function of the form

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