ERROR: DimensionMismatch("left hand side has 1 rows, but right hand side has 3 rows")
 in \ at linalg/factorization.jl:475
 in \ at linalg/dense.jl:417
 in / at linalg/generic.jl:235
 in include at ./boot.jl:245
 in include_from_node1 at ./loading.jl:128
while loading /home/mateusz/Documents/Obliczenia/lista2/zad2/zad2.jl, in expression starting on line 5