x |
ax+b |
2 |
3 |
1 |
an |
1 |
2 |
2 |
3 |
2 |
2a+b |
2 |
3 |
x |
ax+b |
x |
ax+b |
1 |
ax+b |
1 |
ax+b |
an-1 |
an-1+1 |
1 |
an |
1 |
an-1 |
1 |
an |
1 |
an |
1 |
a1 |
1 |
n |
1 |
m |
1 |
q |
| ||
1-q |
1 |
2 |
2 |
m |
1 |
3 |
1 |
3 |
1 |
2 |
1 |
2 |
an+3 |
2n |
Sn |
Tn |
3n+15 |
n+2 |
an |
bn |
A.1个 | B.2个 | C.3个 | D.大于3个 |
A.45 | B.50 | C.55 | D.60 |
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