I have a vector of equations:

```
using SymPy
θ,ω,dθ,dω,b,c = symbols("θ,ω,\\dot{θ},\\dot{ω},b,c")
f1 = Eq(dθ,ω)
f2 = Eq(dω,-b*ω - c* sin(θ))
eqns = [f1;f2]
```

out:

\left[ \begin{array}{c} \dot{θ} = ω \\ \dot{ω} = -b*ω - c*sin(θ) \\ \end{array} \right]

I want to return only the first side of the equality.

The code I use for this is as follows:

```
sys_vec = function (sys,col)
vec = zeros(Sym, (size(sys, 1),1)) #vetor variaveis
for i in 1:size(sys, 1)
vec[i,1] = [var for var in sys[i].args][col]
end
return vec
end
sys_vec(eqns,1)
```

out:

\left[ \begin{array}{c} \dot{θ} \\ \dot{ω} \\ \end{array} \right]

Would there be a way to simplify it? Without using the loop directly?