b.非线性系统 x=f(x2,t)=0→可能有多个 eg.x,=x x2=x1+x,-x 2 令元=0元=0 0 0 0 110b.非线性系统 可能有多个 eg. 令 x  = f (xe ,t) = 0  e x 3 2 1 2 2 1 1 x x x x x x = + − =   x  1 = 0 x  2 = 0           = 0 0 1 e x       − = 1 0 2 e x       = 1 0 3 e x 