x | 0 | (0,a) | a | (a,1) | 1 | (1,1+a) | a+1 |
f/(x) | | + | 0 | - | 0 | + | |
f(x) | | 增 | 极大值f(a) | 减 | | 增 | |
x | 0 | (0,1) | 1 | (1 ,a) | a | (a,1+a) | a+1 |
f/(x) | | + | 0 | - | 0 | + | |
f(x) | | 增 | 极大值f(1) | 减 | | 增 | |
A.K的最大值为 | B.K的最小值为 |
C.K的最大值为2 | D.K的最小值为2 |
A.l | B.2 | C.0 | D.0或 2 |
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