A second matrix

Use a second matrix with rows $\displaystyle 3,1$ and $\displaystyle 2,6$. Press , again. The dimensions are still $\displaystyle 2 \times 2$, so press . Type the elements: 3, , 1, , 2, , 6, . Then , and , , stores it in mat B.

▶ Watch this step in the video (1:48:44)