For R Markdown, How do I display a matrix from R variable

Question

I have a rmd document where I have the following

```{r code_block, echo=FALSE}
A = matrix(c(1,3,0,1),2,2)
B = matrix(c(5,3,1,4),2,2)
```

$$
\\begin{bmatrix} 
1          


        

Answer 1

hello you can use library(printr) in a markdown block

knitr::kable(A ,  caption = "matrix A")

from https://yihui.name/printr/

like this

```{r code_block, echo=FALSE}
A = matrix(c(1,3,0,1),2,2)
B = matrix(c(5,3,1,4),2,2)
knitr::kable(A ,  caption = "matrix A")
```