fyqt.net
当前位置:首页 >> log2 8等于多少? >>

log2 8等于多少?

f(8)=f(√2^6)=log(2)√2=1/2 log(√2-1)(3+2√2)=log(√2-1)(√2+1)^2 =-2 (√2+1=1/(√2-1))

1/8是2的-3次方, 真数的指数可以移到对数前面, ㏒2(1/8) =-3㏒2(2) =-3。

等于3 3333333 33333333

log2一分之八等于多少 log2一分之八 =log2 1/8 =log2 (2)^(-3) =-3

满意答案用换底公式log2^3=lg2/lg3上式等于(lg2/lg3)*(lg3/lg5)*(lg5/lg7)*(lg7/lg8)=lg2/lg8=log2^8=38=2^3log2^8=3log2^2=3

log以2为底的8 =log以2为底的2的立方 =3

3

2log2 8 =2log2 2^3 =6log2 2 =6

log1=0 log2=0.3010 log3=0.4771 log4=2*log2 log5=0.6990 log6=0.7782 log7=0.8451 log8=3*log2 log9=2*log3

不对! 应该是: log4[8] = lg8/lg4 = (3lg2)/(2lg2) = 3/2

网站首页 | 网站地图
All rights reserved Powered by www.fyqt.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com