3D glasses
Geometry
Level
3
Let \(\vec{u}\) and \(\vec{v}\) be vectors in \(\mathbb{R}^n\).
If \(|\vec{u}+\vec{v}| = 5\) and \(|\vec{u}-\vec{v}| = 3\), find \(\vec{u} \cdot \vec{v}\).
by
Jake Lai