[adsense:responsibe:9545213979]
Sage: var('t C1 C2') Sage: A = matrix([[1, 2], [0, 1]]) Sage: V=matrix([[1],[1/2]]) Sage: U=matrix([[1],[0]]) Sage: SC=matrix([[C1],[C2]]) Sage: X1=U*e^(t) Sage: X2=U*t*e^(t)+V*e^(t) Sage: M1=X1.augment(X2) Sage: dM=M1.determinant() Sage: X=M1*SC Sage: R2=diff(X,t)-A*X Sage: M1,X,R2.expand() Resultado con Sagemath del vectores propios ( [ e^t t*e^t + e^t] [(t*e^t + e^t)*C2 + C1*e^t] [0] [ 0 1/2*e^t], [ 1/2*C2*e^t], [0] )
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