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ǰλãҳ > 北京市朝阳区2018-2019高三数学期末考试(理科)试题(解析? - 百度文库

北京市朝阳区2018-2019高三数学期末考试(理科)试题(解析? - 百度文库

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2ȼ۷??ǣ??ǣ??ǵĵȼ۹ϵǷʽ⣬һõȼ۷

3Ϸ?ǵijǵıҪǵijҪ 7.ʵA.

B.

C.

D.

ʵȡֵΧ

𰸡B

ɵa1ae+3ʵxָʼ ⡿logaex+31logaa a1aex+3ʵx e+33 1a3 ѡB

㾦⿼˶ʺͺ⣬е⣮

8.ⳤΪ1Ϊ㣬һ壬Ϊ㹹һС壬ôСⳤΪ A. B. C. D. 𰸡C

СĹϵɵõ.

xx⡿

C1Ϊ͹C2Ϊ壬 н棨ֱƽԶߵĽ棩Σ

ζԽ߳ⳤ ⳤa2

C2ΪΪͼC3壬

C3Խ߳C2ⳤ ĵԱߵľڸߵ ˶ԽΪ ѡ

㾦⿼ץסԪصĹϵǽĹؼռе.

a3

⣺⹲6С⣬ÿС5֣30֣Ѵڴ⿨ϣ

9.֪С𰸡

õȲеǰn͹ʽɽ⣮ ⡿ã26 ࣽ3 ֣7 2d734 d21 S55

ʴΪ25

㾦⿼Ȳеǰn͹ʽӦã

10.֪ıεĶABCDڱ߳Ϊ1еλͼʾ

____________.

5+2025

ΪȲУΪǰĺ.

_______.

𰸡

AΪԭ㣬ACֱΪxὨƽֱϵֱô𰸣

⡿ͼAΪԭ㣬

ACֱΪxὨƽֱϵ A00B42C70D32

71+047

ʴΪ7

㾦⿼ƽʼ㣬ϵǽ

Ĺؼǻļ⣮

11.ͼڱ߳Ϊ1Уʵ߱ʾһ׶ͼ׶Ϊ_______________

𰸡

ͼԭ壬üΪ׶ACBAPBΪȫȵĵֱΣ

PABͲACBAB4POOC2ɴ˼ɵõ ⡿ͼԭԭͼ

üΪ׶ACBAPBΪȫȵĵֱΣ PABͲACBAB4POOC2 PACPBCΪȫȵĵȱΣ ׶ΪVʴΪ

㾦⿼ͼؼͼԭԭ壬ռе⣮ 12.

𰸡

ֱABбΪǦȣ|AF|4|BF|ɽcosȵֵósinȵֵȻߵĽҳʽ

߶ABij|CD||AB|sinȿɼ𰸣

ֱ߽__________________.

㣬ֱ

׼ߵĴߣֱΪ

.

⡿ֱABбΪȣΪǣ|AF|4|BF|

ߵĽҳʽɵùʴΪ5

ˣ

㾦⿼ߵʣĹؼߵĽҳʽе⣮

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2ȼ۷??ǣ??ǣ??ǵĵȼ۹ϵǷʽ⣬һõȼ۷ 3Ϸ?ǵijǵıҪǵijҪ 7.ʵA. B. C. D. ʵȡֵΧ 𰸡B ɵa1ae+3ʵxָʼ ⡿logaex+31logaa a1aex+3ʵx e+33 1a3 ѡB 㾦⿼˶ʺͺ⣬е⣮ 8.ⳤΪ1Ϊ㣬һ

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