Vectors

Representation

Vector addition

[x1y1]+[x2y2]=[x1+x2y1+y2]\begin{array}{c} \begin{bmatrix} x_1\\ y_1 \end{bmatrix} + \begin{bmatrix} x_2\\ y_2 \end{bmatrix} = \begin{bmatrix} x_1 + x_2\\ y_1 + y_2 \end{bmatrix} \end{array}