invr¶

inversion of (rational) matrix

Calling Sequence¶

F = invr(H)

:H polynomial or rational matrix : :F polynomial or rational matrix :

If H is a polynomial or rational function matrix, invr computes H^(-1) using Leverrier’s algorithm (see function code)

s=`poly`_(0,'s')
H=[s,s*s+2;1-s,1+s]; invr(H)
[Num,den]=`coffg`_(H);Num/den
H=[1/s,(s+1);1/(s+2),(s+3)/s];invr(H)