A.0 | B.
| C.1 | D.-1 |
1 |
3 |
1 |
3 |
A.{x|x>3或-3<x<0} | B.{x|x<-3或0<x<3} |
C.{x|x<-3或x>3} | D.{x|-3<x<0或0<x<3} |
f(x2)-f(x1) |
x2-x1 |
A.f(3)<f(-2)<f(1) | B.f(1)<f(-2)<f(3) | C.f(-2)<f(1)<f(3) | D.f(3)<f(1)<f(-2) |
A.在x∈[-7,0]上是增函数且最大值是6 |
B.在x∈[-7,0]上是减函数且最大值是6 |
C.在x∈[-7,0]上是增函数且最小值是6 |
D.在x∈[-7,0]上是减函数且最小值是6 |
A.-18 | B.-10 | C.6 | D.10 |
© 2017-2019 超级试练试题库,All Rights Reserved.