Math topic中文Magnitudemagnitude of a vector (xy)\begin{pmatrix} x \\ y \end{pmatrix}(xy) as x2+y2\sqrt{x^{2} + y^{2}}x2+y2Practice questions1The position vector of point X is (8−4)\begin{pmatrix}8\\-4\end{pmatrix}(8−4). The position vector of point Y is (64)\begin{pmatrix}6\\4\end{pmatrix}(64)…