invsyslin system inversion

## Syntax

    sl2 = invsyslin(sl1)

## Arguments

sl1,sl2

  `syslin` lists (linear systems in state space representation)

## Description

Utility function. Computes the state form of the inverse `sl2` of the linear system `sl1` (which is also given in state form).

The `D`-matrix is supposed to be full rank. Old stuff used by `inv(S)` when `S` is a `syslin` list.

## Examples

    a=0.5;
    b=1;
    c=2;
    sl=syslin('c',a,b,c);
    slInversed=invsyslin(sl)

## See also

- rowregul
- inv