#L latan_begin mat A
2
2.3 5
4.5 -1.15281
#L latan_end mat

#L latan_begin mat B
3
1.1
1.2
1.3
2
2.2
2.3
#L latan_end mat
#L latan_begin mat AB
3
  12.53   13.76   14.49
2.64438 2.86382 3.19854
#L latan_end mat