˽̰꼶ϲѧ̰ڶ2-1ʽ
21 ʽ
1ʱ ĸʾ
1ʵ龳нһĸʾ壬ѧ̽ʵϵĹУʶ(ص)
2ĸʾʱϵһֳǴһҪص㣮(ѵ)
Ķ̲P5456˼⣮ ĸʾ ѧ
1dzĸ t ʾʻʱ䣬Сѧз̽Ӧʱĸ x ʾδ֪
2ĸʾ
(1)aba(b) (2)aba(b0)
3ͳÿСʱvǧףtСʱе·Ϊvtǧף
4һaҳb죬ʣcҳδƽÿҳ 1 С
1 ĸʾӷĽɺͳ˷ķɣ ⣺ӷɣ(ab)ca(bc) ˷ɣ(ab)cacbc.
2 Ϊףһͯڣijûڡ
ͼʾ
Ĺɣn㡱ûĸΪ(A)
A26n B86n C44n D8n
2 ѵ
1Ϊ18 棬½a 棬Ϊ(18a). 2ԭÿxԪ6۳ۣڵۼΪÿ0.6xԪ 3꼶һȫͬѧӰ1վbˣԺÿŶǰһŶ2ˣô3վ(b4)ˣnվb2(n1)ˣ
4һλʮλΪmλΪ2λΪ10m2 . 5ͼͼεܳ2a2b 6ҹɣһ
1Ҫ3С 2Ҫ5С 3Ҫ7С 4Ҫ9С
11Ҫ23С nҪ(2n1)С 3 С
ĸʾĸʾʱҪעЩʲô
2ʱ ʽ
1ⵥʽʽϵʽĴĸ˵֮ϵָһʽϵʹ
2ѧ۲졢ԱȡɵķչѧĹ۲˼ά
Ķ̲P5657˼⣮
1ʽʽϵʽĴĸ 2ʽϵʹ ֪ʶ̽
1ĸĸĸɵĴʽеʽ 2ʽееʽϵ
3ʽĸָĺͽеʽĴ ѧ
1ʽ1a2abyxУǵʽ1a2yx 2(1)aϵǣ11 (2)ʽ3x2ϵǣ32 (3)ϵǣ5 3˵ȷ(C)
Axǵʽ Bx2yǵʽ Cxϵǣ1 D0ǵʽ
(1)һʽϵ11ʱͨʡԲдa2bcabcȣ(2)ʽϵǴʱͨдɼٷ1x2yдx2y.
1 С
1 õʽʾиʽ (1)߳ΪxεܳΪ4x
(2)һٶvǧרMʱʻtСʱ߹·Ϊvtǧף
(3)ͬѧ2ϰnԪômϰҪԪ (4)ͼʾ߳ΪaıΪ6a2Ϊa3 2 ҳиʽеĵʽдʽϵʹ
2
a5a2byz5x718a2b. 3
⣺ayz5x718a2b. aϵΪΪ1 yϵΪ1Ϊ1 z5x7ϵΪ1Ϊ12 18a2bϵΪ18Ϊ3. 2 ѵ
1ʽxymzn5a4bnεʽômnֱֵΪ(D)
A23 B32 C41 D31
2˵ȷ(D)
A0ǵʽ Bϵǣ3 CϵǣD.Ĵ2
4ͬʱabcϵΪ15εʽЩ ⣺a2b2ca2bc2ab2c2a3bcab3cabc3.
5ıڦ뾶ƽĻ4ڦ뾶Ļ.(õʽʾ)
⣺4r2r3.
3иʽ1abx230%am2.вϴʽ