1 |
2 |
1 |
2 |
x2 |
x-1 |
1 |
1-x |
1 |
x+1 |
x |
x-1 |
900 |
x+1 |
900 |
x-3 |
900 |
x+1 |
900 |
x-3 |
900 |
x-1 |
900 |
x+3 |
900 |
x-1 |
900 |
x+3 |
12 |
13 |
5 |
13 |
12 |
5 |
3 |
5 |
4 |
5 |
3 |
4 |
GC |
BG |
1 |
2 |
4 √5 |
3 |
9 |
2 |
3 √5 |
2 |
k |
x |
AE |
CE |
2 |
3 |
k |
x |
CE |
BE |
草莓等级 | 每包中草莓重量(千克) | 售价(元/包) | 每个包装盒的成本(元) |
A级 | 1 | 80 | 2 |
B级 | 2 | 120 | 2 |
DE |
EC |
1 |
2 |
AE |
BE |
1 |
2 |
FC |
EC |