3. If (A=begin{bmatrix}1 & 2 \ 4 & 2end{bmatrix}), then show that |2A|=4|A|. Determinants Exercise 4.1 Previous Next
Category: class 12
Evaluate the determinants in Exercise 1 and 2. (\begin{vmatrix}cosθ & -sinθ \ sinθ & cosθ\end{vmatrix})Evaluate the determinants in Exercise 1 and 2.
2. (i) (begin{vmatrix}cosθ & -sinθ \ sinθ & cosθend{vmatrix}) (ii) (begin{vmatrix}x^2-x+1 & x-1 \ x+1 & x+1end{vmatrix}) Determinants
Evaluate the determinants in Exercise 1 and 2. (\begin{vmatrix}2 & 4 \ -5 & -1\end{vmatrix})
Evaluate the determinants in Exercise 1 and 2. 1. (begin{vmatrix}2 & 4 \ -5 & -1end{vmatrix}) Determinants Exercise
Matrices Class 12 Mcq Test (120301)
Matrices Class 12 Multiple Choice Test Resources Menu Ncert Solutions Exemplar Solutions Assignments Activities MCQ’s
Matrices A and B will be inverse of each other only if (A) AB=BA
1. Matrices A and B will be inverse of each other only if (A) AB=BA (B) AB=BA=0 (C) AB=0,
If A is square matrix such that (A^2=A), then ((I+A)^3–7A) is equal to (A) A
11. If A is square matrix such that (A^2=A), then ((I+A)^3–7A) is equal to(A) A(B) I–A(C) I(D) 3A
If the matrix A is both symmetric and skew symmetric, then (A) A is a diagonal matrix
10. If the matrix A is both symmetric and skew symmetric, then (A) A is a diagonal matrix(B)
If \(A=\begin{bmatrix}α&β \\ γ &-α\end{bmatrix}\) is such that \(A^2=I\), then
9. If (A=begin{bmatrix}α&β \ γ &-αend{bmatrix}) is such that (A^2=I), then (A) (1+α^2+βγ=0)(B) (1-α^2+βγ=0)(C) (1-α^2-βγ=0)(D) (1+α^2-βγ=0). Previous Next
Find the matrix X so that (X\begin{bmatrix}1&2&3 \ 4&5&6
8. Find the matrix X so that (Xbegin{bmatrix}1&2&3 \ 4&5&6 end{bmatrix}=)(begin{bmatrix}-7&-8&-9 \ 2&4&6 end{bmatrix}). Previous Next Class 12
A manufacturer produces three products x, y, z which he sells in two markets. Annual sales are indicated below:
7. A manufacturer produces three products x, y, z which he sells in two markets. Annual sales are