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Topic: Big O Proof
Replies: 3   Last Post: May 11, 2013 2:25 PM

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Ben Brink

Posts: 198
From: Rosenberg, TX
Registered: 11/11/06
RE: Big O Proof
Posted: May 9, 2013 10:31 PM
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att1.html (1.1 K)

Nicholas,
Have never tried this, but is there a way to use L'Hopital's rule? Thanks.
Ben


> Date: Thu, 9 May 2013 17:58:14 -0400
> From: discussions@mathforum.org
> To: discretemath@mathforum.org
> Subject: Big O Proof
>
> You guys have been awesome. I have one last proof this year and my professor is not letting up! I'm trying to prove that tan(x) is not Big O of n^x. My professor doesn't like my undefined argument.
>
> He responded to my proof:
> "Given c,k,n find s > k such that tan(x) > cn^x."
>
> He also added:
> "Don't forget case when n<=1!"
>
> Now, do I want to be using limits? I really thought that I had the right solution!
>
> Thanks!
> -Nic





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