Datasets:
25. λ λ²‘ν° $\vec{a}$, $\vec{b}$ μ λνμ¬ | |
\[ | |
|\vec{a}| = \sqrt{11}, \quad |\vec{b}| = 3, \quad |2\vec{a} - \vec{b}| = \sqrt{17} | |
\] | |
μΌ λ, $|\vec{a} - \vec{b}|$ μ κ°μ? [3μ ] | |
\begin{itemize} | |
\item[1] $\frac{\sqrt{2}}{2}$ | |
\item[2] $\sqrt{2}$ | |
\item[3] $\frac{3\sqrt{2}}{2}$ | |
\item[4] $2\sqrt{2}$ | |
\item[5] $\frac{5\sqrt{2}}{2}$ | |
\end{itemize} | |