摘要:(Ⅰ)求函数的反函数,
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函数f(x)=
(0<x<1)的反函数为f-1(x),数列{an}和{bn}满足:a1=
,an+1=f-1(an),函数y=f-1(x)的图象在点(n,f-1(n))(n∈N*)处的切线在y轴上的截距为bn.
(1)求数列{an}的通项公式;
(2)若数列{
-
};的项中仅
-
最小,求λ的取值范围;
(3)令函数g(x)=[f-1(x)+f(x)]-
,0<x<1.数列{xn}满足:x1=
,0<xn<1且xn+1=g(xn),(其中n∈N*).证明:
+
+…+
<
.
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x |
1-x |
1 |
2 |
(1)求数列{an}的通项公式;
(2)若数列{
bn | ||
|
λ |
an |
b5 | ||
|
λ |
a5 |
(3)令函数g(x)=[f-1(x)+f(x)]-
1-x2 |
1+x2 |
1 |
2 |
(x1-x2)2 |
x1x2 |
(x2-x3)2 |
x2x3 |
(xn+1-xn)2 |
xnxn+1 |
| ||
8 |