Math, asked by BINTEZAHRA1148, 11 months ago

The image of the interval [-1, 3] under the mapping f:R to R given by f(x)=4x3-12x is ? (a)[8, 72] (b)[-8, 72] (c)[0,8] (d)none
{ANSWER IS [-8, 72]}

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Answered by sprao534

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