A matrix {A} = [a_{ij}]₃ × 3} is defined by ...

CBSE Class 12 Math 2022 Term I Solved Paper

Question : 24 of 50

Marks: +1, -0

A matrix

\mathbf{A} = [a_{ij}]_{3 \times 3}

is defined by

a_{ij} = \begin{cases} 2i+3j & i < j \\ 5 & i=j \\ 3i-2j & i>j \end{cases}

The number of elements in A which are more than 5 , is:

Solution: 👈: Video Solution

Explanation: Here,

A = \begin{bmatrix} 5 & 8 & 11 \\ 4 & 5 & 13 \\ 7 & 5 & 5 \end{bmatrix}

Thus, number of elements more than 5 , is 4 .

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