函数的奇偶性与周期性

f(x+2)=f[(x+1)+1]=-f(x+1)=f(x)
f(x+2)=f(x)
log1/3(1/32)=lg(1/32)/lg(1/3)=lg32/lg3=log3(32)
=log3(32/9*9)
=log3(32/9)+2
原式=f[log3(32/9)]
偶函数
=f[-log3(32/9)]
=f[log3(9/32)]
=f[log3(9/32)+2]
=f[log3(81/32)]
1