chap7 .....\chap7_1.m .....\chap7_10.m .....\chap7_11.m .....\chap7_12.m .....\chap7_13.m .....\chap7_14.m .....\chap7_2.m .....\chap7_3.m .....\chap7_4.m .....\chap7_5.m .....\chap7_6.m .....\chap7_7.m .....\chap7_8.m .....\chap7_9.m .....\thresh.m