InterviewSolution
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A = ((2.1,2.5,3.7),(-2.1,5.9,3.8),(0,-2.9,-3)),B=((cosalpha,sinalpha,0),(sin alpha,cosalpha,0),(0,0,-1)) ,C=((cos alpha,sinalpha,0),(-sin alpha,cos alpha,0),(0,0,1)) thensum_(k=0)^(oo)(1)/(3^(k))tr(A(BC)^(k))=________ |
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