This function is already saved in MATLAB and it is as follows:

Punction $[A]=$ Untitled $(t,x)$

$A(1,1)=x(2,1)$;

$A(2,1)=-x(2,1)-x(1,1)$;

end

The matrix A contains:

Select one:

a$.1$ row and $2$ columns

b$.1$ row and $n$ columns

c$.$ Unknown rows and unknowns columns, it depends on the Script contents.

d$.2$ rows and $2$ columns

e$.2$ rows and $1$ column