[[ 1 0; 0 1 ]] is example of

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Identity Matrix

[[ 1 0; 0 1 ]...

Question

a scalarmatrix

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diagonal matrix

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a zero matrix

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an identity matrix

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Solution

The correct option is D
an identity matrix

In the matrix the elements other than the one on principal diagonal are all zero and the elements on the non zero constants = 1 so it is an identity matrix. Every Identity matrix is a diagonal and scalar. So this is not the null matrix.

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Similar questions

A = [\begin{matrix} 1 & 0 & 0 \\ 0 & 2 & 0 \\ 0 & 0 & 4 \end{matrix}]

2 \times 2

A^{2} = I

2 \times 2

=

| A | =

= 0

| A | = 1

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