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Find $$\mathbf{a}+\mathbf{b}, 2 \mathbf{a}+3 \mathbf{b},|\mathbf{a}|, \text { and }|\mathbf{a} \mathbf{b}|$$ $\mathbf{a}=4 \mathbf{i}+\mathbf{j}, \quad \mathbf{b}=...

Question

Find $$\mathbf{a}+\mathbf{b}, 2 \mathbf{a}+3 \mathbf{b},|\mathbf{a}|, \text { and }|\mathbf{a} \mathbf{b}|$$ $\mathbf{a}=4 \mathbf{i}+\mathbf{j}, \quad \mathbf{b}=\mathbf{i}-2 \mathbf{j}$

Find $$\mathbf{a}+\mathbf{b}, 2 \mathbf{a}+3 \mathbf{b},|\mathbf{a}|, \text { and }|\mathbf{a} \mathbf{b}|$$ $\mathbf{a}=4 \mathbf{i}+\mathbf{j}, \quad \mathbf{b}=\mathbf{i}-2 \mathbf{j}$



Answers

Find $$\mathbf{a}+\mathbf{b}, 2 \mathbf{a}+3 \mathbf{b},|\mathbf{a}|, \text { and }|\mathbf{a} \mathbf{b}|$$
$\mathbf{a}=4 \mathbf{i}+\mathbf{j}, \quad \mathbf{b}=\mathbf{i}-2 \mathbf{j}$


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