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If A=[(1,2,3),(2,1,2),(2,2,3)]B=[(1,2,2)...

If `A=[(1,2,3),(2,1,2),(2,2,3)]B=[(1,2,2),(-2,-1,-2),(2,2,3)]` and `C=[(-1,-2,-2),(2,1,2),(2,2,3)]` then find the value of tr. `(A+B^(T)+3C)`.

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The correct Answer is:
17
tr. `(A+B^(T)+3C)=`tr. `(A)+` tr. `(B^(T))+` tr. `(3C)`
`=(1+1+3)+(1-1+3)+3(-1+1+3)`
`=17`
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