Complexity Explorer Santa Fe Institute

Vector and Matrix Algebra

Lead instructor: Anthony D. Rhodes

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When you are finished, clicking the "Score" button at the bottom of the test will show you the correct responses.

Question 1: Let

Find 3A.
Answer 1: A.
Answer 2: B. $\begin{bmatrix} -6 & 3 \\ 0 & 12 \end{bmatrix}$
Answer 3: C. $\begin{bmatrix} -2 & -1 \\ -2 & 4 \end{bmatrix}$
Answer 4: D.
Question 2: Let

$A=\begin{bmatrix} -2 & 1 \\ 0 & 4 \end{bmatrix}$

$B=\begin{bmatrix} 0 & 1 \\ 1 & 0 \end{bmatrix}$

Find A-2B.
Answer 1: A.
Answer 2: B. $\begin{bmatrix} -6 & 3 \\ 0 & 12 \end{bmatrix}$
Answer 3: C. $\begin{bmatrix} -2 & -1 \\ -2 & 4 \end{bmatrix}$
Answer 4: D.