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Math

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Use the intermediate value theorem to show that f(x) has a zero in the given interval. Please show all of your work.
f(x) = 3x^3 + 8x^2 - 5x - 11; [-2.8, -2.7]

I'm not understanding all this questions...

  • Math -

    If the function f(x) is continuous on
    [a,b] and f(a)*f(b)<0 then on (a,b) there
    are at least one zero. Polynomial is
    continuous on R.
    Compute f(-2.8) and f(-2.7)

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