1 |
x |
4 |
x2 |
x |
2 |
x |
2 |
4 |
x2 |
a |
xn |
A.nn | B.n | C.n2 | D.n+1 |
1 |
x |
22 |
x2 |
x |
2 |
x |
2 |
4 |
x2 |
nn |
xn |
A.若f(1)≤1成立,则f(9)≤81成立 |
B.若f(2)≤4成立,则f(1)>1成立 |
C.若f(3)>9成立,则当k≥1时,均有f(k)>k2成立 |
D.若f(3)>9成立,则当k≥3时,均有f(k)>k2成立 |
A.3 125 | B.5 625 | C.0 625 | D.8 125 |
A.15 | B.16 | C.17 | D.18 |
a1+2a2+3a3+…+nan |
1+2+3+…+n |
A.C4H9 | B.C4H10 | C.C4H11 | D.C6H12 |
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