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设ƒ(x)是定义在实数域上的一个函数,且ƒ(x-1)=x
2
+x+1,则ƒ[1/(x-1)]=()
分类:
高等数学(一)(00020)
发表:2024年09月10日 02时09分35秒
作者:
admin
阅读:
(14)
设ƒ(x)是定义在实数域上的一个函数,且ƒ(x-1)=x
2
+x+1,则ƒ[1/(x-1)]=()
A、1/x
2
+1/x+1
B、1/(x-1)
2
+1/(x-1)+1
C、.1/(x
2
+x+1)
D、1/(x-1)
2
+3/(x-1)+3
【正确答案】:D
【题目解析】:ƒ(x-1=(x-1)
2
+3(x-1)+3,∴ƒ(x)=x
2
+3x+3,∴ƒ[1/(x-1)]=1/(x-1)
2
+3/(x-1)+3.
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