1. The problem statement, all variables and given/known data x[n] = -x[n-1] + x[n-2] + x[n-3] and x= 0, x[-1]= 0, x[-2]= -1 We want to find "x[n]". When I started to solve this problem I acquired that lambda1= 1 and lambda2,3= -1. I couldn't do anything after lambda's are found. So, can anyone solve the remaining part?