Question 1201a

Vectors I: Basics, Dot and Cross Products
Vector Magnitude

Question

The vector a{\mathbf{a}} is given by
a=(1−25)\mathbf{a}=\begin{pmatrix} 1 \\ - 2 \\ 5 \end{pmatrix}
What is ∣a∣?{|\mathbf{a}|?}

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