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Teaching Mathematics and its Applications Advance Access originally published online on September 25, 2008
Teaching Mathematics and its Applications 2008 27(4):220-222; doi:10.1093/teamat/hrn018
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© The Author 2008. Published by Oxford University Press on behalf of The Institute of Mathematics and its Applications. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Proof without words: Formula

Sanjay Kumar Khattri

Address for correspondence: Stord Haugesund University College, Norway. E-mail: sanjay.khattri{at}hsh.no

Submitted February 2008; accepted July 2008

We present a pictorial proof of the inequation Formula. The inequation is also confirmed through the Taylor expansion and alternating series theorem.


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