已知a∈R,f(x)=log2(1+ax).
(1)求f(x2)的值域;
(2)若关于x的方程f(x)-log2[(a-4)x2+(2a-5)x]=0的解集恰有一个元素,求实数a的取值范围;
(3)当a>0时,对任意的t∈(
,+∞),f(x2)在[t,t+1]的最大值与最小值的差不超过4,求a的取值范围.
(1)求f(x2)的值域;
(2)若关于x的方程f(x)-log2[(a-4)x2+(2a-5)x]=0的解集恰有一个元素,求实数a的取值范围;
(3)当a>0时,对任意的t∈(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
18-19高一上·浙江杭州·期中 查看更多[2]
【全国百强校】浙江省杭州市学军中学2018-2019学年高一上学期期中考试数学试题(已下线)专题04 《幂函数、指数函数和对数函数》中的解答题压轴题-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)
更新时间:2019-01-11 11:48:47
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(1)若
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(1)当
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