If A - a ij -4 - 4- such that a - ij left - begin matrix 2- when - i - j l0 - when i lneq j lendmatrix -right- then - left fracdetadjadj- A 7 right - is where - represent fractional part functionA- s-B-C-D- None of these

The correct option is A 1/7[ 2 amp; 0 amp; 0 amp; 0; 0 amp; 2 amp; 0 amp; 0; 0 amp; 0 amp; 2 amp; 0; 0 amp; 0 amp; 0 amp; 2 ]⇒ |A|=2^4 ⇒ |a ...

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Adjoint of a Matrix

If A =[ a ij ...

Question

If $A = [a_{i j}]_{4 \times 4}$ , such that $a_{i j} {\begin{matrix} 2, w h e n i = j 0, w h e n i \neq j \end{matrix}, t h e n {\frac{d e t (a d j (a d j A))}{7}}$ is where {.} represent fractional part function)

\frac{1}{7}

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\frac{2}{7}

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\frac{3}{7}

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N o n e o f t h e s e

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A = [a_{i j}]_{3 \times 3}

a_{i j} = ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎩ \begin{matrix} 3 & when i = j [\frac{i}{j}] & when j > i [\frac{j}{i}] & when i > j \end{matrix}

{\frac{d e t (a d j (a d j A)}{8}}

{.}

A = {[a_{i j}]}_{4 \times 4}

a_{i j} = {\begin{matrix} 2 w h e r e i = j 0 w h e r e i \neq j \end{matrix}

{\frac{d e t (a d j (a d j A))}{7}}

{\cdot}

A = [a_{i j}]

4 \times 4

a_{i j} = {\begin{matrix} 2, when i = j 0, when i \neq j \end{matrix}

{\frac{det(adj(adjA))}{7}}

{.}

A = [a_{i j}]_{4 \times 4}

a_{i j} = {\begin{matrix} 2, & if i = j 0, & if i \neq j \end{matrix} .

{\frac{d e t (a d j (a d j A))}{7}}

({.}

)

A = [a_{i j}]_{4 \times 4}

a_{i j} = {\begin{matrix} 2, & if i = j 0, & if i \neq j \end{matrix} .

{\frac{d e t (a d j (a d j A))}{7}}

({.}

)

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