第四章答案
4.1 4.2
4.5 4.6
4.7 4.8
4.9 4.10
4.11 4.12
4.13)(1101
1211111101101981871716515414313212111图略=,=,=,=,=,=,=,=,=,=,=,=++++++++++++n n n n n n n n n n n n n n n n n n n n n Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
4.14 4.15
4.16 4.17
4.18 4.19
4.20
4.21
4.22
4.23