1.(64/27)^2/3
=(4^3/3^3)^2/3
=(4/3)^2
=16/9
2
lg(a2b3/4)/10
=lga^2+lgb^3/4-lg10
=2lga+3/4*lgb-1
3.不明白
4.没看懂
5.
log3 ^1/81=log3 3(-4)=-4
6
1/4log3 16+log3 9/2
=log3 2 +log3 9 -log3 2
=log3 9
=2
7
f(5)=log2 16=4
8
X=Y^10
9 函数Y=2^X与函数y=(1/2)^X的图象关于( )的对称
Y=(1/2)^X=2^(-X)
关于原点对称