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MathGroup Archive 2012

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How Expand?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg127820] How Expand?
  • From: "news" <news at newsfe13.iad.highwinds-media.com>
  • Date: Fri, 24 Aug 2012 05:04:32 -0400 (EDT)
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  • Reply-to: "MedStat" <MedStat at shaw.ca>

Hi folks,

How can I expand the following :

[ 1 + cos(x) + i sin(x) ]^3

to obtain;

8 cos(x/2)^3 [cos(3x/2)+ i sin(3x/2)]

Thanks a lot.

Max.



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