对数的运算,
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/20 04:26:34
![对数的运算,](/uploads/image/z/8665694-62-4.jpg?t=%E5%AF%B9%E6%95%B0%E7%9A%84%E8%BF%90%E7%AE%97%2C)
xPJ@~R(4Vl})O&6bW%gI-iz~f۱v>ο?g/m[ߤu̩G p
<
BB4JI
7'YK7AQ \P}aɰ-W`nD4y$3F2R`O`
|)ݷ(t0(FYt6bZ4Sp!I L2
PڶE~WZ
)z\@C[UF
ͺ$Z9\R٪vP@e9Y\j2(K;M2$e>e~5th~z
对数的运算,
对数的运算,
对数的运算,
换底公式
原式=(lg3/lg4+lg3/lg8)(lg2/lg3+lg2/lg9)
=(lg3/2lg2+lg3/3lg2)(lg2/lg3+lg2/2lg3
=[(1/2+1/3)*lg3/lg2][(1+1/2)lg2/lg3]
=(1/2+1/3)(1+1/2)
=5/4
=[(1/2+1/3)*log(2,3)×(1+1/2)log(3,2)