题目内容：

1到30的平方根

优质解答

1 ±1
2 ±1.414213562
3 ±1.732050808
4 ±2
5 ±2.236067977
6 ±2.449489743
7 ±2.645751311
8 ±2.828427125
9 ±3
10 ±3.16227766
11 ±3.31662479
12 ±3.464101615
13 ±3.605551275
14 ±3.741657387
15 ±3.872983346
16 ±4
17 ±4.123105626
18 ±4.242640687
19 ±4.358898944
20 ±4.472135955
21 ±4.582575695
22 ±4.69041576
23 ±4.795831523
24 ±4.898979486
25 ±5
26 ±5.099019514
27 ±5.196152423
28 ±5.291502622
29 ±5.385164807
30 ±5.477225575