1.已知log2底[log3底(log4底x)]=0,则x=______.
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1.已知log2底[log3底(log4底x)]=0,则x=______.
2.已知2log3底×(x-y)/2=log3底(xy),则x/y=_______.
3.a>0且a≠1时,loga底1+loga底a=_______.
4.a>0且a≠1时,loga底a^2-a^(loga底3)=_____.
5.已知6^a=8,则log6底2=________.
6.已知log5底(log4底a)=1,求实数a的值.
7.2^(2log2底5)=_______.
8.2^(-log2底3)=________.
2.已知2log3底×(x-y)/2=log3底(xy),则x/y=_______.
3.a>0且a≠1时,loga底1+loga底a=_______.
4.a>0且a≠1时,loga底a^2-a^(loga底3)=_____.
5.已知6^a=8,则log6底2=________.
6.已知log5底(log4底a)=1,求实数a的值.
7.2^(2log2底5)=_______.
8.2^(-log2底3)=________.
1.已知log2底[log3底(log4底x)]=0,则x=_64_.
(令[log3底(log4底x)]=1,令log4底x=3)
2.已知2log3底×(x-y)/2=log3底(xy),则x/y=_______. 第二题没看明白
3.a>0且a≠1时,loga底1+loga底a=__1___.
4.a>0且a≠1时,loga底a^2-a^(loga底3)=_2-3__=_-1_.
5.已知6^a=8,则log6底2=___a/3_____.(a=log6底8=3*log6底2)
6.已知log5底(log4底a)=1,求实数a的值.(写过程)
由已知,log4底a=5,所以a=4的5次方,也就是1024
7.2^(2log2底5)=__25__.(写过程)
2log2底5=log2底25
8.2^(-log2底3)=___1/3_____.(写过程)
(-log2底3)=log2底(1/3)
(令[log3底(log4底x)]=1,令log4底x=3)
2.已知2log3底×(x-y)/2=log3底(xy),则x/y=_______. 第二题没看明白
3.a>0且a≠1时,loga底1+loga底a=__1___.
4.a>0且a≠1时,loga底a^2-a^(loga底3)=_2-3__=_-1_.
5.已知6^a=8,则log6底2=___a/3_____.(a=log6底8=3*log6底2)
6.已知log5底(log4底a)=1,求实数a的值.(写过程)
由已知,log4底a=5,所以a=4的5次方,也就是1024
7.2^(2log2底5)=__25__.(写过程)
2log2底5=log2底25
8.2^(-log2底3)=___1/3_____.(写过程)
(-log2底3)=log2底(1/3)
若log4底[log3底(log2底x)]=0,则x=?
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