A.[1,2] | B.[
| C.[2,
| D.[
|
5 |
2 |
5 |
2 |
5 |
2 |
5 |
2 |
5 |
2 |
A.1 | B.2 | C.3 | D.4 |
A.y=x-1 | B.y=2x | C.y=log2x | D.y=x2-1 |
1 |
3 |
A.在区间(0,1),(1,+∞)内均有零点 |
B.在区间(0,1),(1,+∞)内均无零点 |
C.在区间(0,1)内有零点,在区间(1,+∞)内无零点 |
D.在区间(0,1)内无零点,在区间(1,+∞)内有零点 |
1+bx |
ax+1 |
1 |
a |
e1 |
AB |
e2 |
c |
c |
e1 |
e2 |
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