函数y=22x﹣2x+1+2的定义域为M,值域P=[1,2],则下列结论一定正确的个数是
①M=[0,1];
②M=(﹣∞,1);
③[0,1]M;
④M(﹣∞,1];
⑤1∈M;
⑥﹣1∈M.
1 |
2 |
A.2x<(0.2)x<(
| B.2x<(
| ||||
C.(
| D.(0.2)x<(
|
A.R | B.N+ |
C.N | D.{5,52,53,54,…} |
1 |
2 |
1 |
2 |
A.2 | B.4 | C.
| D.
|
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