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ѧƣ һ ѡ 40֣
һѡ8С⣬ÿС5֣40֣ÿСгĸѡУѡĿҪ
һ
1֪A?{x?Z(x?2)(x?1)?0}B?{?2,?1}ôAUB
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2֪a?b?0вʽһ
Aa?b
B
11? abC()?()
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AֶҪ CֱҪ
BҪ DȲҲҪ
5ڵȱ{an}Уa1?3a1+a2?a3=9a4+a5?a6
A9
B72
C972
D 972
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3?coxsľΪ2ô
A1 B1
C3 D?3
7.йƲѭԲΪΪԭ硶㾭͡ԶʮĽ
(gu)Ӱļ¼УӰʵõģӰǰյȲеĹɼóģ±Ϊ㾭ԶʮĽӰļ¼115.14ʾ1151֣1=10֣
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A72.4
B81.4
C82.0
D91.6
8.κμS|S|ʾSеԪظn(S)ʾSӼ. A
B|A|?2017n(A)?n(B)?n(AUB)|AIB|
A2017
B2016
C2015
D2014
ڶ ѡ 110֣
6С⣬ÿС5֣30֣ 9. iλ
2i= 1?ix2y210. ԲC2+?1(a?0)ҽֱΪF1F2PԲCϣ
a16|PF1|+|PF2|?10ôԲCΪ
11(?x2)6չʽУ 𣩣
1x?x+y?2?0?12xy?2x?y?2?0z=2x?yֵΪ
?y?0?
13ͼ߳Ϊ2ABCƽֱϵOyУACϣBy
ĶPغϣABCԶCΪת˳ʱתBʱBΪ˳
P(B)B1yxתʱ
AOCA1C1xת˼ABCA1B1C1ʱB˶켣ijΪ ڹ
uuuruuurУOB?OPֵΪ
14֪f(x)Ϊżx?0ʱf(x)?x?[x][x]ʾ
g(x)?f(x)?kx?k(k?R)k?1g(x)____㣻g(x)ͬ
㣬kȡֵΧ____
6С⣬80֣Ӧд˵㲽֤̣
15.С13֣
ͼڡABCУDBCϵĵ㣬AC?3CD?2AD?7sinB?CĴС ABij.
16.С14֣
ͼʾĶУABCDDZ߳Ϊ2ΣƽPDCQƽABCDPD^DCEFGֱΪBCADQGPBDC7. 7Aе. PAFADEBC֤EGƽPDCQ ֪P-BF-CֵΪP-ABCD
17.С14֣
ϷԽԽϲijƼ֯סҡѧУѧѧ±ʾ
ѧ 30 40 20 10 6 6Ϊ˽ѧˮƽÿƼݲ÷ֲķѧIJѧгȡ30μʾ飮
ʼסҡѧȡѧ
Ӳμʾ30ѧȡ22ѧͬһѧĸʣ ڲμʾ30ѧУԼסѧѧȡ2ñʾüѧѧķֲУ
18.С13֣
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