1 |
2 |
1 |
T2 |
1 |
T3 |
1 |
Tn |
1013 |
2013 |
a1(1-q4) |
1-q |
a1(1-q3) |
1-q |
a1(1-q2) |
1-q |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
n(1+2n-1) |
2 |
1 |
T2 |
1 |
T3 |
1 |
Tn |
1 |
22 |
1 |
32 |
1 |
n2 |
22-1 |
22 |
32-1 |
32 |
n2-1 |
n2 |
1•3•2•4•3•5•…•(n-1)(n+1) |
22•32•42•…•n2 |
n+1 |
2n |
n+1 |
2n |
1013 |
2013 |
11 |
13 |
S1+S2+…+Sn |
n |
A.2006 | B.2007 | C.2008 | D.2009 |
bn |
an+2 |
1 |
2 |
n(an+1) |
2 |
ax+b |
cx2+1 |
ax+b |
cx2+1 |
1 |
2 |
1 |
2 |
(x1-x2)2 |
x1x2 |
(x2-x3)2 |
x2x3 |
(xn-xn+1)2 |
xnxn+1 |
5 |
16 |
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