log2(x-3)>1,则x的取值范围是?
问题描述:
log2(x-3)>1,则x的取值范围是?
A(4,正无穷)
B [4,正无穷)
C(5,正无穷)
D [5,正无穷)
答
log2(x-3)>1
=>
x-3>2
x>5
选择C