(a) |

(b) |

(c) |

Figure 5: (a) The bounded region for the eigenvalues of control model (48) and (49) in the plane for , , , , , , , and . (b) The time responses for the state of control model (48) and (49) in the plane for , , , , , , , , , and . The initial value point . (c) The time responses for the state of control model (48) and (49) in the plane. |