http://i38.tinypic.com/242hk4k.png

Okay. The left side is clearly <a,b>. The right side is...um?

Let j = (1,2,...,n) and k = (1,1/2,...,1/n), then <sqrt(j),a><sqrt(k),b>.

I guess? I don't have any idea what to do with this. (Wondering)

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- November 5th 2009, 01:45 PMdavismjInner product inequality sort of?
http://i38.tinypic.com/242hk4k.png

Okay. The left side is clearly <a,b>. The right side is...um?

Let j = (1,2,...,n) and k = (1,1/2,...,1/n), then <sqrt(j),a><sqrt(k),b>.

I guess? I don't have any idea what to do with this. (Wondering) - November 5th 2009, 02:09 PMJameson
Since the indices are the same the scalar j can cancel out as every term of the first sum will have (1/j) and every term of the second will have a j. It is simply the Cauchy-Schwarz inequality now.

Cauchy?Schwarz inequality - Wikipedia, the free encyclopedia - November 5th 2009, 08:42 PMdavismj
- November 5th 2009, 09:28 PMJameson
Yes, of course. Got too excited to post a cool link. Won't work.