1 |
2 |
x+y |
1+xy |
1 |
2 |
2xn | ||
1+
|
A.f(xn)=2n-1 | B.f(xn)=-2n-1 | C.f(xn)=-3n+1 | D.f(xn)=3n |
x+y |
1+xy |
2xn |
1+xn2 |
2xn |
1+xn2 |
1 |
2 |
1 |
3 |
1 |
3n-1 |
A.
| B.
| ||||||||||
C.
| D.
|
1 |
an |
2n+1 |
an | ||
|
1 |
7 |
2 |
72 |
3 |
73 |
1 |
74 |
2 |
75 |
3 |
76 |
1 |
77 |
2 |
78 |
3 |
79 |
1 |
710 |
2 |
711 |
3 |
712 |
1 |
713 |
2 |
714 |
d |
n |
3 |
2 |
3 |
2 |
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