Matrices… | NUST Entrance Test Mathematics

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

Difficulty: Easy

A:

Null matrix

B:

Scalar matrix

C:

Equal matrix

D:

Row matrix

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

Difficulty: Easy

A:

Diagonal matrix

B:

Identity matrix

C:

Scalar matrix

D:

Idempotant

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

Difficulty: Easy

A:

Diagonal matrix

B:

Identity matrix

C:

Null matrix

D:

Idemptant

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