上海市奉贤区2019年高三第一学期期末(一模)学科质量检测数学试题及答案

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BD15{}nS

AC1]+

BD16xxM{100x}A25BD三解题第题每分第20题16分，第题18分，分76分17BCABCABACDBC

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2BAF1BA2MFMOλ03F21n{}a{}

nnnn1nnnnnnnnn1nnnnnn*

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n{}{}a{}d{}{}{}ab+cnN

xx22x2xx22x2年上海奉区考学模卷参考答案与试题解析一填题第1题第毎分第7题到题毎题5分,满分分A{|31}B{lg+1}1D115JBB{|31}{0}B{lgx+1}{1}ARRx

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arctan

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xy

二选题单选题每分，满分)13ABCDOM11sinsincosABCD：

cossincoscoscoscossincoscos14AC

BD

nnnnnnnnnnnnA215{}nS

AC1]+

BD8J1135{}1nq{}q

{}q

11231221322212111231221322212121132221111111

qq2B16xxM{100x}A25BD1154xxM{100x}xMx

xxxxxxx2xx4x1004x1002550B三解题第题每分第20题16分，第题18分，分76分17BCABCABACDBC1AAD2ABC8AB

AD

111111111111△1111111111111111111△1111111LM31415FAABCADAAD2AACyADABBCABDBCADAAABCADABBC4AB2ABCC

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yAAD

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ADADABarccos

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fx

sinxyx19fxxx|+2x[0a12fx3a5C343551xx+1|+2[0logxxf|logx+1a+1xx+1|log+1x2fxx+1a|+2

x251]f3logfx[251fxx+1f24a+1+1

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20A

2BAF1BA2MFMOλ03FK849B24AtA2

y

λ3Bxx2ABy+4tt2t+4t2tt1A12

21221212SS+nnnnnnn1nnn21221212SS+nnnnnnn1nnnnnn*yxM

M3B

MMMxykx+m0xmx22

四边形OABC△OAB△OBC△OAB△OBF

B

21n{}a{}

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n{}{}a{}d{}{}{}ab+cnN

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nn+nnnnn+1{}

2+

ndNNSn

m1n1+dm2+d2mNm113{}daNbcn+Nc+b+ca+d