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} |
x2-x-6 |
x-1 |
(x-3)(x+2) |
(x-1) |
A.最大值4,最小值-4 | B.最大值4,无最小值 |
C.无最大值,最小值-4 | D.既无最大值也无最小值 |
A.1 | B.
| C.0 | D.-1 |
A.5 | B.11 | C.29 | D.43 |
A.1 | B.1.5 | C.0 | D.-1 |
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