Q

# Please,please help me Which of these can be a diagonal element in a square matrix with 6 elements and 6 rows ?

Which of these can be a diagonal element in a square matrix with 6 elements and 6 rows ?

• Option 1)

$a_{31}$

• Option 2)

$a_{77}$

• Option 3)

$a_{22}$

• Option 4)

$a_{15 }$

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As we have learned

Leading / principal diagonal of a matrix -

Diagonal from left hand side upper corner to the lower most element.

- wherein

For a diagonal element $a_{ij}; i= j$

Option 1)

$a_{31}$

Option 2)

$a_{77}$

Option 3)

$a_{22}$

Option 4)

$a_{15 }$

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