ch6\exa6_1.m ...\exa6_10.m ...\exa6_11.m ...\exa6_12.m ...\exa6_13.m ...\exa6_14.m ...\exa6_15.m ...\exa6_16.m ...\exa6_17.m ...\exa6_18.m ...\exa6_19.m ...\exa6_2.m ...\exa6_20.m ...\exa6_21.m ...\exa6_22.m ...\exa6_23.m ...\exa6_3.m ...\exa6_4.m ...\exa6_5.m ...\exa6_6.m ...\exa6_7.m ...\exa6_8.m ...\exa6_9.m ch6