::: {.cell hash='02_R_introduction_cache/revealjs/unnamed-chunk-106_1d882d1b0bcdaf33cef23400ead0d029'}

```{.r .cell-code}
a <- matrix(c(1,2,3,4), nrow=2, ncol=2)
b <- matrix(c(11,12,13,14), nrow=2, ncol=2)
```
:::