Identity matrix of order 2-by-2 is:

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1 + 5 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

Identity matrix of order 2-by-2 is:

\(\begin{bmatrix} 1 & 1 \\ 0 & 1 \end{bmatrix}\)

\(\begin{bmatrix} 0 & 1 \\ 1 & 1 \end{bmatrix}\)

\(\begin{bmatrix} 0 & 1 \\ 1 & 0 \end{bmatrix}\)

\(\begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}\)