104/CH5/EX5.18/5_18.sce


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//system with identical eigen values
A=[1 0;0 1]   //lamda1=1
B=[2;3]       //b11=2 b21=3
S=[B A*B]
if det(S)==0 then
    printf("system is uncontrollable")
else 
    printf("system is contollable")
    end