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Old Mar 6, 2009 | 07:35 AM
  #15  
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sherwood
I missed Sean
 
Joined: Aug 2004
Posts: 11,285
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From: Fairfield/Bridgeport CT
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buy a TI-89 h:
IIRC for A*B its Ab+Ba where the lowercase is the derivative of the individual expressions A and B

:edit:
reading>me :doh:

Red X looks like he's got it for you
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