Table 1 The values of $\mathbf{\{}{\mathit{u}}_{\mathit{n}}\mathbf{\}}$ , $\mathbf{\{}{\mathit{z}}_{\mathit{n}}\mathbf{\}}$ , $\mathbf{\{}{\mathit{y}}_{\mathit{n}}\mathbf{\}}$ , and $\mathbf{\{}{\mathit{x}}_{\mathit{n}}\mathbf{\}}$ with initial values ${\mathit{x}}_{\mathbf{1}}\mathbf{=}\mathbf{30}$ and ${\mathit{x}}_{\mathbf{1}}\mathbf{=}\mathbf{-}\mathbf{30}$

$x_1=30$

$x_1=-30$

${\mathit{u}}_{\mathit{n}}$

${\mathit{z}}_{\mathit{n}}$

${\mathit{y}}_{\mathit{n}}$

${\mathit{x}}_{\mathit{n}}$

${\mathit{u}}_{\mathit{n}}$

${\mathit{z}}_{\mathit{n}}$

${\mathit{y}}_{\mathit{n}}$

${\mathit{x}}_{\mathit{n}}$