nb-a |
n-1 |
nb-a |
n-1 |
b-a |
n-1 |
b-a |
n-1 |
b-a |
n-1 |
nb-a |
n-1 |
n-1 |
| ||
n-1 |
| ||
n-1 |
| ||
n-1 |
| ||
n-1 |
| ||
A.三角形 | B.梯形 | C.平行四边形 | D.矩形 |
A.d1=2,d2=0,d3=2010 | B.d1=1,d2=1,d3=2010 |
C.d1=2,d2=1,d3=2009 | D.d1=2,d2=2,d3=2008 |
|
A.1 | B.-1 | C.i | D.-i |
A.n+1 | B.2n | C.
| D.n2+n+1 |
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