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Math Help - help me check the answer

  1. #1
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    help me check the answer

    question

    here is my answer, tell me whether i did it right?

    if u have a better, don't hesitate to share
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  2. #2
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    Quote Originally Posted by IamLittle View Post
    question

    here is my answer, tell me whether i did it right?

    if u have a better, don't hesitate to share
    Well, Correct me if I'm wrong, but haven't you only contradicted the 2nd assumption, i.e. "assume there exists a point b..." Does the solution follow from that?
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  3. #3
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    Quote Originally Posted by southprkfan1 View Post
    Well, Correct me if I'm wrong, but haven't you only contradicted the 2nd assumption, i.e. "assume there exists a point b..." Does the solution follow from that?
    thank you for reading
    yes i have proved that the 2nd assumption is wrong
    and the last contradiction is to contradict the question which claims f(x) is bounded
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