问题
选择题
已知函数f(x)为偶函数,且f(x+1)=
|
答案
f(log212)=f(log23+2)=
=f(log23)=f(log21 f(log23+1)
+1)=3 2
,1 f(log2
) 3 2
∵log2
∈(0,1),3 2
∴f(log212)=
=1 2log2
-13 2
=2.1
-13 2
故选取C.
已知函数f(x)为偶函数,且f(x+1)=
|
f(log212)=f(log23+2)=
=f(log23)=f(log21 f(log23+1)
+1)=3 2
,1 f(log2
) 3 2
∵log2
∈(0,1),3 2
∴f(log212)=
=1 2log2
-13 2
=2.1
-13 2
故选取C.