TS EAMCET 6-Aug-2021 Shift 2 Question Paper

Section: Mathematics

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Question : 4 of 160

Marks: +1, -0

A and B are two 3×3 non-singular matrices such that adj A = |A|B. If tr(X) denotes the trace of a square matrix X and C = [

4	4	7
3	−2	5
−2	3	6

] then,

∞

Σ

k=1

tr(

1

3k

(AB)kC)=

12
4
81
∞ (infinite)

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