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Math Help - proof floor function

  1. #1
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    proof floor function

    Can you help me to solve this please ?
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  2. #2
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    Here are some examples.
    g^{ - 1} \left( {\{ 2\} } \right) = [2,3)\;\& {\kern 1pt} g^{ - 1} \left( {\{  - 1, - 2\} } \right) = [ - 2,0)\,

    Now you try.
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