方程log以2为底[log以3为底﹙log以4为底x﹚]=0的解
问题描述:
方程log以2为底[log以3为底﹙log以4为底x﹚]=0的解
答
log2[log3(log4(x))]=0=log4(1)
log3(log4(x))=1=log3(3)
log4(x)=3
x=4³=64