chap02
......\ex2_1.m
......\ex2_10.m
......\ex2_11.m
......\ex2_12.m
......\ex2_13.m
......\ex2_14.m
......\ex2_15.m
......\ex2_16.m
......\ex2_17.m
......\ex2_18.m
......\ex2_19.m
......\ex2_2.m
......\ex2_20.m
......\ex2_21.m
......\ex2_22.m
......\ex2_23.m
......\ex2_24.m
......\ex2_25.m
......\ex2_26.m
......\ex2_27.m
......\ex2_28.m
......\ex2_29.m
......\ex2_3.m
......\ex2_30.m
......\ex2_31.m
......\ex2_32.m
......\ex2_33.m
......\ex2_34.m
......\ex2_35.m
......\ex2_36.m
......\ex2_37.m
......\ex2_38.m
......\ex2_39.m
......\ex2_4.m
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......\ex2_41.m
......\ex2_42.m
......\ex2_43.m
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......\ex2_45.m
......\ex2_46.m
......\ex2_47.m
......\ex2_48.m
......\ex2_49.m
......\ex2_5.m
......\ex2_50.m
......\ex2_51.m
......\ex2_52.m
......\ex2_53.m
......\ex2_54.m
......\ex2_55.m
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......\ex2_57.m
......\ex2_58.m
......\ex2_59.m
......\ex2_6.m
......\ex2_60.m
......\ex2_7.m
......\ex2_8.m
......\ex2_9.m