A.1-e | B.-1 | C.-e | D.0 |
1 |
x |
1-x |
x |
π |
2 |
A..-
| B..2 | C..
| D.
|
A.(-∞,+∞) | B.(-∞,1) | C.(-1,+∞) | D.(-1,1) |
∫ | x0 |
A.有最大值0,但无最小值 | ||
B.有最大值0和最小值-
| ||
C.有最小值-
| ||
D.既无最大值又无最小值 |
A.-2 | B.0 | C.2 | D.4 |
x2-x-6 |
x-1 |
A.{x|x<-2,或x>3} | B.{x|x<-2,或1<x<3} |
C.{x|-2<x<1,或x>3} | D.{x|-2<x<1,或1<x<3} |
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