if An=[2−n43−n3], then ∑∞n=1|An|=

1.	if An=[2−n43−n3], then ∑∞n=1\|An\|=
Answer» $if A_{n} = [\begin{matrix} 2^{- n} & 4 3^{- n} & 3 \end{matrix}], then \sum_{n = 1}^{\infty} \| A_{n} \| =$

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