In R2\mathbb{R}^2R2, if u=⟨3,4⟩\mathbf{u} = \langle 3, 4 \rangleu=⟨3,4⟩ and you want to normalize it, the unit vector is:
⟨37,47⟩\langle \frac{3}{7}, \frac{4}{7} \rangle⟨73,74⟩
⟨3,4⟩\langle 3, 4 \rangle⟨3,4⟩
⟨35,45⟩\langle \frac{3}{5}, \frac{4}{5} \rangle⟨53,54⟩
⟨325,425⟩\langle \frac{3}{25}, \frac{4}{25} \rangle⟨253,254⟩