已知函数f(x)的定义域是{x|x>0},并且满足:当x>1时,f(x)>2;对任意x₁,x₂∈(0,+∞),都有f(x₁ x₂)=f(x₁)·f(x₂)- f(x₁)- f(x₂)+2
(1)求f(1)
(2)求证:函数f(x)在(1,+∞)上单调递增
(3)当f(2)=5时,求不等式f(x)<65的解集
(1)求f(1)
(2)求证:函数f(x)在(1,+∞)上单调递增
(3)当f(2)=5时,求不等式f(x)<65的解集
20-21高一上·浙江·阶段练习 查看更多[1]
(已下线)【新东方】2019高一数学上学期第一次月考RZ
更新时间:2020-09-27 14:17:44
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【推荐2】已知函数f(x)定义域为R,f(1)=2,f(x)≠0,对任意x,y∈R都有f(x+y)=f(x)•f(y),当x>0时,f(x)>1;
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(1)判断f(x)在R上的单调性,并证明;
(2)解不等式f(x)f(x-2)>16.
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【推荐1】已知函数
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