1到30立方根口诀表
11平方121
12平方144
13平方169
14平方196
15平方225
16平方256
17平方289
18平方324
19平方361
1立方1
2立方8
3立方27
4立方64
5立方125
6立方216
7立方343
8立方512
9立方729
立方根 :
3√1 = 1
3√2 = 1.25992104989487
3√3 = 1.44224957030741
3√4 = 1.5874010519682
3√5 = 1.7099759466767
3√6 = 1.81712059283214
3√7 = 1.91293118277239
3√8 = 2
3√9 = 2.0800838230519
3√10 = 2.15443469003188
3√11 = 2.22398009056932
3√12 = 2.28942848510666
3√13 = 2.35133468772076
3√14 = 2.41014226417523
3√15 = 2.46621207433047
3√16 = 2.51984209978975
3√17 = 2.57128159065824
3√18 = 2.6207413942089
3√19 = 2.66840164872194
3√20 = 2.71441761659491
3√21 = 2.75892417638112
3√22 = 2.80203933065539
3√23 = 2.84386697985157
3√24 = 2.88449914061482
3√25 = 2.92401773821287
3√26 = 2.96249606840737
3√27 = 3
3√28 = 3.03658897187566
3√29 = 3.07231682568585
3√30 = 3.10723250595386
按照平方根的定义:一个数a的2次方等于b,则a叫做b的2次方根,可计算出1到30的平方根依次是:±1,±√2,±√3,±2,±√5,±√6,±√7,±2√2,±3,±√10,±√11,±2√3,±√13,±√14,±√15,±4,±√17,±3√2,±√19,±2√5,±√21,±√22,±√23,±2√6,±5,±√26,±3√3,±2√7,±√29,±√30。
按照立方根的定义:一个数a的立方等于b,则a叫b的立方根,可计算出1到30的立方根依次是:1,3次根下2,3次根下3,3次根下4,3次根下5,三次根下6,三次根下7,2,3次根下9,三次根下10,三次根下11,三次根下12,三次根下13,三次根下14,三次根下15,2•三根下2,三次根下17,三次根下18,三次根下19,三次根下20,三次根下21,三次根下22,三次根下23,三次根下24,三次根下25,三次根下26,3,三次根下28,三次根下29,三次根下30。