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Precalculus Flashcards: Matrix Addition Subtraction And Multiplication

Study Matrix Addition Subtraction And Multiplication in Precalculus with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What is A+BA+B for A=(1−230)A=\begin{pmatrix}1&-2\\3&0\end{pmatrix} and B=(45−12)B=\begin{pmatrix}4&5\\-1&2\end{pmatrix}?

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ANSWER

(5322)\begin{pmatrix}5&3\\2&2\end{pmatrix}. Add corresponding entries: (1+4,−2+5;3+(−1),0+2)(1+4, -2+5; 3+(-1), 0+2).

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Precalculus: Matrix Operations & Applications

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What this deck covers

This deck focuses on Matrix Addition Subtraction And Multiplication, giving you a quick way to review the definitions, rules, and examples that matter most for Precalculus.

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Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 33Practice questions for this set
Let AA and BB be 2×22\times 2 matrices: A=[−1230],B=[4−1−25].A=\begin{bmatrix}-1&2\\3&0\end{bmatrix},\quad B=\begin{bmatrix}4&-1\\-2&5\end{bmatrix}. Given the matrices above, what is 2A−B2A-B?
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