2016ͨߵѧУȫͳһѧ⣨ȫ1
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һ. ѡ⣺12С⣬ÿС5֣ÿСĸѡУֻһǷĿҪ.
1輯A?{1,3,5,7} B?{x|2?x?5}AB?
A{1,3} B{3,5} C{5,7} D{1,7} 𰸡B
(2)(1?2i)(a?i)ʵ鲿ȣaΪʵa=
A3 B2 C2 D3 𰸡A
(1?2i)(a?i)?a?2?(1?2a)i֪a?2?1?2aa??3ѡA.
3ΪӺ졢ơס4ɫĻѡ2ֻһ̳Уµ2ֻһ̳УɫɫĻͬһ̳ĸ 1152A3 B2 C D6
3𰸡A
4ɫĻѡһ̳У2һ̳6
1ַкɫɫһ̳2֣ʸΪ3ѡA..
4ABCڽABCĶԱ߷ֱΪabc.֪a?5c?2cosA?23b=
A2 B3 C2 D3
²Ž Բθ߿
1
𰸡D
5?b2?4?2?b?2?Ҷ
21b??3b?33ȥѡD.
1
5ֱlԲһһ㣬ԲĵlľΪ᳤ģ
4ԲΪ
1123A B C D
3234𰸡B
ԲУ
11OF?c,OB?b,OD??2b?b42
Rt?OFBУ|OF|?|OB|?|BF|?|OD|
a2?b2?c2
a2?4c2Բʵã
e?12ѡB.
1
6y=2sin (2x+)ͼƽƸںͼӦĺΪ
64ЦЦЦ
Ay=2sin(2x+) By=2sin(2x+) Cy=2sin(2xC) Dy=2sin(2xC)
4343𰸡D
??1y?2sin(2x?)y?2sin(2x?)6Ϊ?6ͼƽ4????y?2sin[2(x?)?)]?2sin(2x?)463ѡD. ڼ4λúΪ
7ͼijͼ뾶ȵԲÿԲֱİ뾶.ü28
ǣı
3
²Ž Բθ߿
2
A17 B18 C20 D28 𰸡A
8a>b>00 Alogac ccablogac?ѡA 1gc1gc,logbc?lgalgb0?c?1?1gc?0a?b?0 lgbǵĴСȷ; ѡBlga?lgbȷlgalogca?1ga1gb1,logbc?lgclgc,lga?lgbͬһlgcı䲻Ⱥŷѡ cccy?xa?bBȷ;ѡCڵһɵõC;xy?cѡDRΪΪ.ԱѡB. 9y=2xCe[C2,2]ͼΪ 2|x| ²Ž Բθ߿ 3