April 2026

Find a and b by Equating Matrices Finding a and b by Equating Matrices Question: Find \( a \) and \( b \) if \[ A = \begin{bmatrix} a+4 & 3b \\ 8 & -6 \end{bmatrix}, \quad B = \begin{bmatrix} 2a+2 & b^2+2 \\ 8 & b^2-5b \end{bmatrix} \] Concept Used Two matrices are equal […]

Matrix Addition Problem Matrix Addition Example Question: Compute the sum: \[ \begin{bmatrix} 3 & -2 \\ 1 & 4 \end{bmatrix} + \begin{bmatrix} -2 & 4 \\ 1 & 3 \end{bmatrix} \] Solution: Matrix addition is done by adding corresponding elements. \[ = \begin{bmatrix} 3 + (-2) & -2 + 4 \\ 1 + 1 &

Find x and y by Equating Matrices Finding x and y by Equating Matrices Question: Find \( x \) and \( y \) if \[ \begin{bmatrix} x+10 & y^2+2y \\ 0 & -4 \end{bmatrix} = \begin{bmatrix} 3x+4 & 3 \\ 0 & y^2-5y \end{bmatrix} \] Concept Used Two matrices are equal if their corresponding elements

Find x and y by Equating Matrices Finding x and y by Equating Matrices Question: Find \( x \) and \( y \) if \[ A = \begin{bmatrix} 2x+1 & 2y \\ 0 & y^2 – 5y \end{bmatrix}, \quad B = \begin{bmatrix} x+3 & y^2 + 2 \\ 0 & -6 \end{bmatrix} \] Concept Used

Construct Matrices for Sales Data Constructing Matrices for Sales Data Question: Write \(2 \times 3\) matrices for January sales and total 2-month sales for two car dealers. Step 1: Understand Structure Rows → Dealers (A and B) Columns → Types of cars (Deluxe, Premium, Standard) Step 2: January Sales Matrix Dealer A: 5, 3, 4

Example of a Triangular Matrix Example of a Triangular Matrix Question: Give an example of a triangular matrix. Concept Used A triangular matrix is a square matrix in which either all elements below the main diagonal or all elements above the main diagonal are zero. Example \[ A = \begin{bmatrix} 1 & 2 & 3

Example of a Diagonal Matrix Which is Not Scalar Example of a Diagonal Matrix Which is Not Scalar Question: Give an example of a diagonal matrix which is not a scalar matrix. Concept Used A diagonal matrix has all non-diagonal elements equal to zero. A scalar matrix is a diagonal matrix in which all diagonal

Matrix Which is Both Row and Column Matrix Example of a Matrix Which is Both Row and Column Matrix Question: Give an example of a row matrix which is also a column matrix. Concept Used – A row matrix has only one row → order \( 1 \times n \) – A column matrix has

Find x, y, z, w by Equating Matrices Finding x, y, z, w by Equating Matrices Question: Find \( x, y, z, w \) if \[ \begin{bmatrix} xy & 4 \\ z + 6 & x + y \end{bmatrix} = \begin{bmatrix} 8 & w \\ 0 & 6 \end{bmatrix} \] Concept Used Two matrices are

Find (x + y) from Matrix Equation Finding (x + y) by Equating Matrices Question: Find \( (x + y) \) if \[ \begin{bmatrix} 2x + 1 & 5x \\ 0 & y^2 + 1 \end{bmatrix} = \begin{bmatrix} x + 3 & 10 \\ 0 & 26 \end{bmatrix} \] Concept Used Two matrices are equal