三个数60.7,0.76,log0.76的大小顺序是( )A.0.76<log0.76<60.7B.log0.76<0.76<60.7C.log0.76<60
题型:单选题难度:简单来源:不详
三个数60.7,0.76,log0.76的大小顺序是( )A.0.76<log0.76<60.7 | B.log0.76<0.76<60.7 | C.log0.76<60.7<0.76 | D..0.76<60.7<log0.76 |
|
答案
由指数函数和对数函数的图象可知: 60.7>1,0<0.76<1,log0.76<0, 所以log0.76<0.76<60.7 故选B. |
举一反三
(1)计算:2log52+log5+loge+3××21-log23; (2)求函数f(x)=的定义域. |
已知f(x)=lg(ax-bx)(a,b为常数), ①当a,b>0且a≠b时,求f(x)的定义域; ②当a>1>b>0时,判断f(x)在定义域上的单调性,并用定义证明. |
函数y=log3(x2-2x)的单调减区间是______. |
最新试题
热门考点