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August 25th, 2017, 03:10 AM  #1 
Newbie Joined: Aug 2017 From: Milan Posts: 3 Thanks: 0  Why Wolfram consider (1+x)^2/3 positive only after x=1? WolframAlpha: Computational Knowledge Engine $\displaystyle (1+x)^2/3$ shouldn't be always positive when x$\small\,\ne$1? Last edited by skipjack; August 25th, 2017 at 06:10 AM. 
August 25th, 2017, 06:06 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,372 Thanks: 2009 
Did you mean $(1 + x)^{2/3}$?

August 25th, 2017, 06:40 AM  #3 
Member Joined: May 2017 From: Russia Posts: 34 Thanks: 5  

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positive, wolfram, x2 or 3 
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