1 |
2 |
4 |
5 |
=1.53×(-0.75+0.5+0.8),
=1.53×(1.3-0.75),
=1.53×0.55,
=0.8415;
(2)(2
1 |
3 |
1 |
2 |
9 |
12 |
1 |
6 |
=(
7 |
3 |
7 |
2 |
21 |
12 |
6 |
7 |
=
7 |
3 |
6 |
7 |
7 |
2 |
6 |
7 |
21 |
12 |
6 |
7 |
=-2+3-
3 |
2 |
=3-3
1 |
2 |
=-
1 |
2 |
1 |
2 |
4 |
5 |
1 |
3 |
1 |
2 |
9 |
12 |
1 |
6 |
1 |
2 |
4 |
5 |
1 |
3 |
1 |
2 |
9 |
12 |
1 |
6 |
7 |
3 |
7 |
2 |
21 |
12 |
6 |
7 |
7 |
3 |
6 |
7 |
7 |
2 |
6 |
7 |
21 |
12 |
6 |
7 |
3 |
2 |
1 |
2 |
1 |
2 |