数学计算常用数值
指数对数
e = 2.71828
ln2 = 0.7
ln3 = 1.1
ln5 = 1.6
log10(2) = 0.3;
log10(3) = 0.5
log10(5) = 0.7
log2(10) = 3.3
ln(10) = 2.3
(用于对数转换计算,如 ln(5) = ln10*log10(5) = 2.3*0.7 = 1.6)
三角函数
平方、平方根
11²=121
12²=144
13²=169
14²=196
15²=225
16²=256
17²=289
18²=324
19²=361
21²=441
22²=484
23²=529
24²=576
25²=625
sqrt(2) = 1.414
sqrt(3) = 1.732
sqrt(5) = 2.256