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Math Help - Limits Question.

  1. #1
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    Question Limits Question.

    Hi forum members, I would appreciate the help with the problem attached.

    Basically I need to find to functions that do not follow the rule.

    Is there any technique that helps find those functions.

    Thanks in advance for anyone who can help.
    Attached Thumbnails Attached Thumbnails Limits Question.-limit_calc_problem_3.bmp   Limits Question.-limit_calc_problem_4.bmp  
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  2. #2
    Senior Member Tinyboss's Avatar
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    For the first one, try f(x)=1/x, g(x)=1/x+1.
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  3. #3
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    thank you

    any idea about the second one ?
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  4. #4
    Senior Member Tinyboss's Avatar
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    Okay, the deal with the second one is that if x goes to zero from the left, you get f(-1), and from the right you get f(1). If the limit of f(x) at 1 and -1 equals to 4, then the result holds.
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  5. #5
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    i will give it a look.

    thanks.
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  6. #6
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    Still couldn't find f(x) that break the rules.

    May I ask for further help with the 2nd problem.
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