1 |
log2bn+3 |
1 |
log2bn+3 |
1 |
n+3 |
1 |
4×5 |
1 |
5×6 |
1 |
6×7 |
1 |
(n+3)(n+4) |
1 |
4 |
1 |
n+4 |
n |
4(n+4) |
mn |
n+4 |
n+2 |
n+3 |
(n+4)(n+2) |
n(n+3) |
n2+6n+8 |
n2+3n |
3n+8 |
n2+3n |
3 |
n+3 |
8 |
n2+3n |
3 |
x+3 |
8 |
x2+3x |
15 |
4 |
15 |
4 |
15 |
4 |
A.{x|-1<x<0,或>1} | B.{x|x<-1,或0<x<1} |
C.{x|x<-1,或x>1} | D.{x|-1<x<0,或0<x<1} |
A.sinx | B.-sinx | C.cosx | D.-cosx |
A.点 | B.直线 | C.线段 | D.射线 |
7 |
4 |
1 |
x |
© 2017-2019 超级试练试题库,All Rights Reserved.