rational - Scilab objects, rational in Scilab
A rational r is a quotient of two polynomials r=num/den . The internal representation of a rational is a list. r=tlist('['r','num','den','dt'],num,den,) is the same as r=num/den . A rational matrix can be defined with the usual syntax e.g. [r11,r12;r21,r22] is a 2x2 matrix where rij are 1x1 rationals. A rational matrix can also be defined as above as a list tlist(['r','num','den','dt'],num,den,) with num and den polynomial matrices.
s=poly(0,'s'); W=[1/s,1/(s+1)] W'*W Num=[s,s+2;1,s];Den=[s*s,s;s,s*s]; tlist(['r','num','den','dt'],Num,Den,) H=Num./Den syslin('c',Num,Den) syslin('c',H) [Num1,Den1]=simp(Num,Den)
poly , syslin , simp ,