例5.2.2非平稳序列时序图 x2 x4 100000 0.00E+00 -2.00E+13 =4.00E+13 0 -6.00E+13 -8.00E+13 -1.00E+14 -1.20E+14 -100000 -1.60E+14 -1.80E+14 -200000 -2.00E+14 jmmnmmnjmmnimnmmn 0 20406080100 020406080100 (2)x,=-1.1x-1+c (4)x,=x-1+0.5x-1+ 2525 例5.2.2非平稳序列时序图 1 (2) 1.1 t t t x x  = − + − t t t t x = x + x +  −1 5 −1 (4) 0