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Math Help - Is the function (3x^3+x) / (x^2+1) one to one

  1. #1
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    Is the function (3x^3+x) / (x^2+1) one to one

    Do the removable discontinuities make it not one to one, or is it?
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by -DQ- View Post
    Do the removable discontinuities make it not one to one, or is it?
    this graph is continuous everywhere. it is one to one. you can show this by showing it is strictly increasing, so each y-vaue gets hit once.
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