Arithmetic and geometric means

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deathnote93

Homework Statement

http://img264.imageshack.us/img264/7505/math.png

AM = arithmetic mean = (a+b)/2
GM = geometric mean = sqrt(ab)

I'm totally stuck on this, substituting does not help at all.

Last edited by a moderator: May 4, 2017

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tiny-tim

Hi deathnote93!

(have a square-root: √

)

Hint: Let a = cb.