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If $A=\begin{bmatrix}1 & 2 \\a & -1 \end{bmatrix}$ and $A^{2}=\begin{bmatrix}0 & 0 \\0 & 0 \end{bmatrix}$ then the values of a is

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}a & b \\c & d \end{bmatrix}$ and k is a scalar then kA=

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}1 & 0&0 \\0 & 1 &0\\0&0&1 \end{bmatrix}$ then $A^{2}$=

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}0 & -2 \\2 & 3 \end{bmatrix}$ and $B=\begin{bmatrix}5 & -1 \\3 & 0 \end{bmatrix}$ then the product matrix AB=

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}1\\4\\3\end{bmatrix}$ and $B=\begin{bmatrix}3&7&1\end{bmatrix}$ , we can find

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}4&7&2&9\end{bmatrix}$and $B=\begin{bmatrix}12\\1\\5\\6 \end{bmatrix}$ then AB=

NETNUST Entry TestMathematicsMatrices and Determinants

Multiplication of a row vector A by a column vector B requires as a precondition that each vector have

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}1 & -2&3 \\ \end{bmatrix}$ and $B=\begin{bmatrix}1 &0 \\2&-1\\1&2 \end{bmatrix}$ then dimension of AB will be

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}3& 6&24\\12 & 9&36\\6 &15 &18\end{bmatrix}$ then 1/3A=

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}2 & -2&4 \\0 & -3&-4\end{bmatrix}$ and $B=\begin{bmatrix}1 & -5&6 \\4 & -2&-3\end{bmatrix}$ then A-B

NETNUST Entry TestMathematicsMatrices and Determinants

The addition and subtraction of two matrices A and B requires that the matrices be

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}4 & 9 \\2 & 6 \end{bmatrix}$ and $B=\begin{bmatrix}1 & 7 \\5 & 4 \end{bmatrix}$ then A-B=

NETNUST Entry TestMathematicsMatrices and Determinants

Two matrices are comfortable for additon, if they are

NETNUST Entry TestMathematicsMatrices and Determinants

The matrices $\begin{bmatrix}2 & 3&1\\1 &2& 3\\\end{bmatrix}$ and $\begin{bmatrix}2 & 1\\3&2\\1&3\end{bmatrix}$ are

NETNUST Entry TestMathematicsMatrices and Determinants

l*n matrix of the form $[a_{i1},a_{i2}....a_{in}]$ is said to be a

NETNUST Entry TestMathematicsMatrices and Determinants

Matrix $\begin{bmatrix}3 & 0&0\\0 &3& 0\\0&0&3\end{bmatrix}$ is a

NETNUST Entry TestMathematicsMatrices and Determinants

$\begin{bmatrix}\sqrt{2} & 0&0\\0 &\sqrt{2}& 0\\0&0&\sqrt{2}\end{bmatrix}$ is a

NETNUST Entry TestMathematicsMatrices and Determinants

In a diagonal matrix, all enteries except in diagonal are

NETNUST Entry TestMathematicsMatrices and Determinants

$A=\begin{bmatrix}2+1 & 0\\5+1 & 5\\\end{bmatrix}$ is a

NETNUST Entry TestMathematicsMatrices and Determinants

If $B=\begin{bmatrix}2 & 1 &5\\5 & 2&3\\3&1&2 \end{bmatrix}$ then the entries 2,2,2 form the

NETNUST Entry TestMathematicsMatrices and Determinants

If all elements in a matrix A are real, then matrix A is called

NETNUST Entry TestMathematicsMatrices and Determinants

If $A=\begin{bmatrix}2 & -3 \\4 & 1 \end{bmatrix}$, then $A^{t}$=

NETNUST Entry TestMathematicsMatrices and Determinants

If A is a matrix of order m*1, then matrix A is called

NETNUST Entry TestMathematicsMatrices and Determinants

If $B=\begin{bmatrix}2 & -1\:\: -3 \\-2& 3\:\:-3 \end{bmatrix}$ then B=?

NETNUST Entry TestMathematicsMatrices and Determinants

The diagonal containing the entries $a_{11},a_{22},a_{33}.....a_{mn}$ in a square root matrix $A=[a_{mn}]$ is called then

NETNUST Entry TestMathematicsMatrices and Determinants