Find $\left| \frac { 1 } { 2 } \mathbf { v } \right|$ , $| \mathbf { u } - \mathbf { v } |$ and $| \mathbf { u } | - | \mathbf { v } |$ , given that $\mathbf { u } = \langle 1$ , $\text { 3) }$ and $\mathbf { v } = \langle - 2,1 \rangle$ .

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The Answer of Find $\left| \frac { 1 } { 2 } \mathbf { v } \right|$ , $| \mathbf { u } - \mathbf { v } |$ and $| \mathbf { u } | - | \mathbf { v } |$ , given that $\mathbf { u } = \langle 1$ , $\text { 3) }$ and $\mathbf { v } = \langle - 2,1 \rangle$ .

Find ∣12v∣\left| \frac { 1 } { 2 } \mathbf { v } \right|​21​v​

Find $\left| \frac { 1 } { 2 } \mathbf { v } \right|$