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2) 987654321 τ(987654321)=1+2+3+4+5+6+7+8=36
3) 1 3 5 … (2n 1) (2n) (2n 2)… 4 2
τ(1 3 5 … (2n 1) (2n) (2n 2)… 4 2)=2+4+6+… +2(n 1)=n(n 1)
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56000 15600 1 5 6 00 15 6 0 0
15600 01560 0 1 5 60 01 5 6 0
01560 00156 0 0 1 56 00 1 5 6
00156 00015 0 0 0 15 00 0 1 5
00015 56000 0 19 3000 00651140
156 0 0 1560 0
015 6 0 0156 0
665001 5 6 0015 6
000 1 5 0001 5
0 0 0 211 390 0 0 0 0 665
D === =
= ==
1
16000 5600 1560 1 5 6 0
05600 156001560156
01560 015600150015
00156 0015 5600 0 19 300
00015
1560
0156 211
0015
0 0 65 114
D = = =? =?
=? =?
2
51000 1600
56015615610600 0560
1 5 6 0 1 5 0 1 5 6500560 0156
0 1 5 5 6 0 0 19 3000156 0015
00015
D= =?=?===
3
56100 1500
15000 0160
1901060 0056
00056 0015
00015
D= ==
4
56010 1560
15600 0150
501500 0016
00106 0005
00005
D= ==
5
56001 1560
15600 0156
101560 0015
00150 0001
00010
D= ==
35124
1 23 45
211 65 19 5 1
665 665 665 665 665
DDDDDx xxxx
DD DD
∴== == == == ==
10.K? ?? - a)êèU$??/?4?
123
1 23
1 23
0
0
20
xxx
x xx
x xx
λ
μ
μ
++=?
+ +=?
+ +=?
YM2Lê?·,
·?
11011 01
1 11 1 (1)11
200
D
λ λμλ λ
μ μ μ μλ
μμ
= = =? =?
'(1)0,0 1orμλμλ?=== G êèA1?/?4?YM2Lê?·?