# Question 2, Exercise 2.1

Solutions of Question 2 of Exercise 2.1 of Unit 02: Matrices and Determinants. This is unit of Model Textbook of Mathematics for Class XI published by National Book Foundation (NBF) as Federal Textbook Board, Islamabad, Pakistan.

## Question 1(i)

Identify the following matrix $\quad A=\left[\begin{array}{lll}3 & 6 & 2 \\ 2 & 1 & 9\end{array}\right]$ as square matrix, rectangular matrix, row matrix or column matrix.

** Solution. **

Rectangular matrix

## Question 1(ii)

Identify the following matrix $B=\left[\begin{array}{ll}\frac{1}{3} & 1 \\ 2 & 6\end{array}\right]$ as square matrix, rectangular matrix, row matrix or column matrix.

** Solution. **

Square matrix

## Question 1(iii)

Identify the following matrix $C=\left[\begin{array}{l}3 \\ 2 \\ 8\end{array}\right]$ as square matrix, rectangular matrix, row matrix or column matrix.

** Solution. **

Column matrix

## Question 1(iv)

Identify the following matrix $D=\left[\begin{array}{lll}1 & 6 & 9 \\ 2 & 0 & 1 \\ 3 & 1 & 2\end{array}\right]$ as square matrix, rectangular matrix, row matrix or column matrix.

** Solution. **

Square matrix

## Question 1(v)

Identify the following matrix $E=\left[\begin{array}{lll}2 & 0 & 1\end{array}\right]$ as square matrix, rectangular matrix, row matrix or column matrix.

** Solution. **

Row matrix

## Question 1(vi)

Identify the following matrix $F=[16]$ as square matrix, rectangular matrix, row matrix or column matrix.

** Solution. **

Square matrix

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