问题
选择题
已知f(x)=
|
答案
∵f(x)=
,
(x≥4)1 2x f(x+1)(x<4)
∴f(log23)=f(log23+1)
=f(log26)=f(log26+1)
=f(log212)=f(log212+1)
=f(log224)=
=1 2log224
.1 24
故选A.
已知f(x)=
|
∵f(x)=
,
(x≥4)1 2x f(x+1)(x<4)
∴f(log23)=f(log23+1)
=f(log26)=f(log26+1)
=f(log212)=f(log212+1)
=f(log224)=
=1 2log224
.1 24
故选A.