计算log4为底27为指乘以log5为底8为指乘以log3为底25为指

问题描述:

计算log4为底27为指乘以log5为底8为指乘以log3为底25为指

log4 27Xlog5 8Xlog3 25
=lg27/lg4 Xlg8/lg5Xlg25/lg3
=3lg3/2lg2X3lg2/lg5X2lg5/lg3
=3/2X3X2
=9