3 |
x-1 |
3 |
x1-1 |
3 |
x2-1 |
3[(x2-1)-(x1-1)] |
(x1-1)(x2-1) |
3(x2-x1) |
(x1-1)(x2-1) |
3 |
x-1 |
3 |
x-1 |
3 |
5 |
1 |
3 |
1 |
2 |
5 |
12 |
1 | ||
x-
|
1 |
2011 |
2 |
2011 |
3 |
2011 |
4 |
2011 |
2010 |
2011 |
A.函数y=f(x)有最小值 |
B.函数y=f(x)过点(4,2) |
C.函数y=f(x)是偶函数 |
D.函数y=f(x)在其定义域上是增函数 |
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