x^(?)=[[-6,0,5,-2],[1,-6,0,-1],[0,0,2,-10],[0,0,5,-8]]x+e^(-3t)[[sin5t],[e^(-3t)sin5t],[cos5t],[sin5t]],x(0)=[[(1)/(10)],[-(1)/(10)],[(1)/(20)],[0]],x(t)=