Prove A² − 12A − I = O Question Show that the matrix \[ A = \begin{bmatrix} 5 & 3 \\ 12 & 7 \end{bmatrix} \] is a root of the equation \[ A^2 – 12A – I = O. \] Solution Step 1: Compute \(A^2\) \[ A^2 = \begin{bmatrix} 5 & 3 \\ 12 […]
Show that the matrix A = [[5, 3], [12, 7]] is a root of the equation A^2 – 12A – I = O. Read More »
Prove A³ − 4A² + A = O Question Show that the matrix \[ A = \begin{bmatrix} 2 & 3 \\ 1 & 2 \end{bmatrix} \] satisfies the equation \[ A^3 – 4A^2 + A = O. \] Solution Step 1: Compute \(A^2\) \[ A^2 = \begin{bmatrix} 2 & 3 \\ 1 & 2 \end{bmatrix}
Show that the matrix A = [[2, 3], [1, 2]] satisfies the equation A^3 – 4A^2 + A = O. Read More »
Prove A² − 2A + 3I₂ = O Question If \[ A = \begin{bmatrix} 2 & 3 \\ -1 & 0 \end{bmatrix}, \quad I_2 = \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} \] show that \[ A^2 – 2A + 3I_2 = O. \] Solution Step 1: Compute \(A^2\) \[ A^2 = \begin{bmatrix}
If A = [[2, 3], [-1, 0]], show that A^2 – 2A + 3I2 = O. Read More »
Prove A² − 5A + 7I₂ = O Question If \[ A = \begin{bmatrix} 3 & 1 \\ -1 & 2 \end{bmatrix}, \quad I_2 = \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} \] show that \[ A^2 – 5A + 7I_2 = O. \] Solution Step 1: Compute \(A^2\) \[ A^2 = \begin{bmatrix}
If A = [[3, 1], [-1, 2]], show that A^2 – 5A + 7I2 = O. Read More »
Find λ in Matrix Equation Question If \[ A = \begin{bmatrix} 3 & 1 \\ -1 & 2 \end{bmatrix}, \quad I = \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} \] find \( \lambda \) such that \[ A^2 = 5A + \lambda I. \] Solution Step 1: Compute \(A^2\) \[ A^2 = \begin{bmatrix}
If A = [[3, 1], [-1, 2]], and I = [[1, 0], [0, 1]], then find λ so that A^2 = 5A + λI. Read More »
Prove A² − A + 2I = 0 Question If \[ A = \begin{bmatrix} 3 & -2 \\ 4 & -2 \end{bmatrix}, \quad I = \begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix} \] prove that \[ A^2 – A + 2I = 0. \] Solution Step 1: Compute \(A^2\) \[ A^2 = \begin{bmatrix}
If A = [[3, -2], [4, -2]] and I = [[1, 0], [0, 1]], then prove that A^2 – A + 2I = 0. Read More »
Find x from Matrix Equation Question If \[ [1\ \ -1\ \ x] \begin{bmatrix} 0 & 1 & -1 \\ 2 & 1 & 3 \\ 1 & 1 & 1 \end{bmatrix} \begin{bmatrix} 0 \\ 1 \\ 1 \end{bmatrix} = 0, \] find \(x\). Solution Step 1: Single Matrix Equation \[ [1\ \ -1\ \
If [1, -1, x][[0, 1, -1], [2, 1, 3], [1, 1, 1]] [[0], [1], [1]] = 0 find x. Read More »
Find x from Matrix Equation Question If \[ [x\ \ 4\ \ 1] \begin{bmatrix} 2 & 1 & 2 \\ 1 & 0 & 2 \\ 0 & 2 & -4 \end{bmatrix} \begin{bmatrix} x \\ 4 \\ -1 \end{bmatrix} = 0, \] find \(x\). Solution Step 1: Single Matrix Equation \[ [x\ \ 4\ \
If [x, 4 ,1] [[2, 1, 2], [1, 0, 2], [0, 2, -4]] [[x], [4], [-1]] = 0, find x. Read More »
Find x in Matrix Equation Question If \[ \begin{bmatrix} 2 & 3 \\ 5 & 7 \end{bmatrix} \begin{bmatrix} 1 & -3 \\ -2 & 4 \end{bmatrix} = \begin{bmatrix} -4 & 6 \\ -9 & x \end{bmatrix}, \] find \(x\). Solution \[ \begin{bmatrix} 2 & 3 \\ 5 & 7 \end{bmatrix} \begin{bmatrix} 1 & -3 \\
If [[2, 3], [5, 7]] [[1, -3], [-2, 4]] = [[-4, 6], [-9, x]], find x Read More »
Find x from Matrix Equation (Single Step Method) Question If \[ [1\ \ 1\ \ x] \begin{bmatrix} 1 & 0 & 2 \\ 0 & 2 & 1 \\ 2 & 1 & 0 \end{bmatrix} \begin{bmatrix} 1 \\ 1 \\ 1 \end{bmatrix} = 0, \] find \(x\). Solution (Single Matrix Equation Method) \[ [1\ \
If [1, 1, x] [[1, 0, 2], [0, 2, 1], [2, 1, 0]] [[1], [1], [1]] = 0, find x. Read More »