f(2x) |
x-1 |
f(2x) |
x-1 |
|
f(2x) |
x-1 |
A.[0,1] | B.[-2,-1] | C.[2,3] | D.无法确定 |
A.[-1,7) | B.[-1,5) | C.{-1,1,3,5} | D.{-1,1,3,5,7} |
π |
6 |
2π |
3 |
1 | ||
1+
|
A.M={x|x≠0},N={y|y≠0} |
B.M={x|x≠0},N={y|y∈R} |
C.M={x|x<0且x≠-1,或x>0},N={y|y<0或0<y<1或y>1} |
D.M={x|x<-1或-1<x<0或x>0},N={y|y≠0} |
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