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Math Help - Determine whether these sets S are bounded, and determine sup(S) and inf(S) if they e

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    Determine whether these sets S are bounded, and determine sup(S) and inf(S)

    For each set S below, determine whether S is bounded, and determine sup(S) and inf(S), if they exist.
    a) S = {x: x^2 < 5x}
    b) S = {x: 2x^2 < x^3 + x}
    c) S = {x: 4x^2 > x^3 + x}
    Last edited by qtpipi; April 21st 2009 at 10:57 PM.
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    Did you graph each side separately?
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