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  • Help me please, - Matrices and Determinants - JEE Main-2

If matrix A = \begin{bmatrix} 5 &7 &9 &11 \end{bmatrix}  , then find a matrix B that should be added to get A = \begin{bmatrix} 8 &8 &10 &11 \end{bmatrix}

  • Option 1)

    \begin{bmatrix} 3 &3 & 1 \end{bmatrix}

  • Option 2)

    \begin{bmatrix} 3 &1 & 1 \end{bmatrix}

  • Option 3)

    \begin{bmatrix} 3 &2 & 1 \end{bmatrix}

  • Option 4)

    none of these 

 

Answers (1)

best_answer

As we have learned

Row Matrix -

Single row matrix order is 1 \times n

- wherein

eg . [ 1 2 3 7 ]

 

 We can  only add matrices with same order so 

A = \begin{bmatrix} 5 &7 & 9 &11\end{bmatrix} ; \; \; then \; \; B= \begin{bmatrix} 3 &1 &1 &0 \end{bmatrix} 

 


Option 1)

\begin{bmatrix} 3 &3 & 1 \end{bmatrix}

Option 2)

\begin{bmatrix} 3 &1 & 1 \end{bmatrix}

Option 3)

\begin{bmatrix} 3 &2 & 1 \end{bmatrix}

Option 4)

none of these 

Posted by

Himanshu

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