Recent questions tagged matrix

6 votes
2 answers
301
The rank of the matrix $A=\begin{pmatrix} 1 & 2 & 1 & -1\\ 9& 5& 2& 2\\ 7& 1& 0 & 4 \end{pmatrix}$ is ______ .$0$$1$$2$$3$
10 votes
2 answers
302
If $\text{A}$ and $\text{B}$ are square matrices with same order and $\text{A}$ is symmetric, then $\text{B}^{\text{T}}\text{AB}$ isSkew symmetricSymmetricOrthogonalIdemp...
9 votes
2 answers
303
If $\text{A, B, C}$ are any three matrices, then $\text{A}'+\text{B}'+\text{C}' $ is equal toa null matrix$\text{A + B + C}$$\text{(A + B + C)}'$$\text{-(A + B + C})$
9 votes
2 answers
304
If $\begin{vmatrix} 3 && 3 \\ x && 5 \end{vmatrix} =3$ then the value of $x$ is$2$$3$$4$$5$
11 votes
2 answers
305
If two adjacent rows of a determinant are interchanged, the value of the determinantbecomes zeroremains unalteredbecomes infinitivebecomes negative of its original value
8 votes
2 answers
306
A square matrix $\text{A}$ is called orthogonal if $\text{A}'\text{A}=$$\text{I}$$\text{A}$$-\text{A}$$-\text{I}$
8 votes
4 answers
307
If a square matrix A satisfies $A^TA=I$, then the matrix $A$ isIdempotentSymmetricOrthogonalHermitian
5 votes
3 answers
308
0 votes
1 answer
309
What is the determinant of the following matrix?$\begin{matrix} 76 && 18 && 34 \\ 14 && 12 && 6 \\ 90 && 30 && 40 \end{matrix}$
0 votes
1 answer
310
2 votes
1 answer
311
Find the 1000_th power of the matrix -
10 votes
2 answers
312
$\begin{vmatrix} 265 && 240 && 219 \\ 240 && 225 && 198 \\ 219 && 198 && 181 \\ \end{vmatrix} = $$779$$679$$0$$256$
1 votes
1 answer
314
Find the Eigenvector of $\begin{bmatrix} 1 & cos\theta\\ cos \theta & 1 \end{bmatrix}$
11 votes
3 answers
316
Let $A$ be a matrix such that:$A=\begin{pmatrix} -1 & 2\\ 0 & -1 \end{pmatrix}$and $B=A+A^2+A^3+\ldots +A^{50}$. Then which of the following is true?$B^{2}=I$$B^{2}=0$$B^...
1 votes
1 answer
317
0 votes
1 answer
318
How many real links are required to store a sparse matrix of 10 rows , 10 columns ,and 15 non zeros entries.(pick up the closest answer)
2 votes
5 answers
319
if $A = \begin{bmatrix} 2 &3 &4 \\ 3 & -1 &2 \\ -1& 4 & 5 \end{bmatrix}$ then rank of the matrix $(A-A^T)$ is _____(A) $1$ (B) $2$ (C...
0 votes
0 answers
321
0 votes
2 answers
322
What is the determinant of matrix 2A. determinant of matrix A is 3. and IT is 4 by 4 matrix?
1 votes
1 answer
323
I want to ask about the equation i hv marked a question mark.(p-1qp)n=p-1qnp how??Why is there no power on matrix p ?
1 votes
2 answers
324
0 votes
1 answer
325
how to solve??
5 votes
2 answers
327
1 votes
1 answer
330