```calc
L := 6 m
q := 12 kN/m
i := 0..4
x[i] := i*L/4
M_x[i] := q*x[i]*(L - x[i])/2
x = ?
M_x = ?
```

```calc
v := [3; 4; 12]
M := [2, 1; 1, 3]
v[0] = ?
|v| = ?
M^-1 = ?
|M| = ?
M^T = ?
```

```calc
F := [10 kN; 2 kN*m]
F = ?
```

```calc
sqrt(v) = ?
```