Linear Algebra for Data Science Using Python/

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Quiz: Elementary and Invertible Matrix

Quiz: Elementary and Invertible Matrix

Test your knowledge of elementary and invertible matrices by completing this quiz.

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Multiple-choice questions

1.

Which elementary matrix reflects the following?

r1=r1+3r3\bold{r}_1 = \bold{r}_1+3\bold{r}_3

A.

[100010301] \begin{bmatrix} 1 & 0 & 0\\ 0 & 1 & 0\\ 3 & 0 & 1 \end{bmatrix}

B.

[103010001] \begin{bmatrix} 1 & 0 & 3\\ 0 & 1 & 0\\ 0 & 0 & 1 \end{bmatrix}

C.

[300010001] \begin{bmatrix} 3 & 0 & 0\\ 0 & 1 & 0\\ 0 & 0 & 1 \end{bmatrix}

D.

[001010100] \begin{bmatrix} 0 & 0 & 1\\ 0 & 1 & 0\\ 1 & 0 & 0 \end{bmatrix}

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