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Question: Can this be simplified from a given rule

Question:Can this be simplified from a given rule

Changwoo Yoon 20 Maple 2016
rule
April 05 2016
2

Hello there,

I want to simplify this for a given rule in Maple

(-(1/2)*ib-(1/2)*ia+ic)*vc+(-(1/2)*ia-(1/2)*ic+ib)*vb+(-(1/2)*ic-(1/2)*ib+ia)*va

rule :  ia+ib+ic=0

A desired result should be 

3/2*ic*vc+3/2*ib*vb+3/2*ia*va 

but I can't apply this rule in Maple...  it seems like recursive and goes back again and again.

 

Can it break the recursive routine and make it as a desired result?

 

 Thank you
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