【文档说明】海南省海南鑫源高级中学2019-2020学年高一下学期期末测试卷数学试题(艺体班)答案.docx,共(3)页,63.786 KB,由小赞的店铺上传
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艺体班期末试题答案一、单项选择题:1-8BBCADBBA二、多项选择题:9.AC10.BC11.CD12.AB三、填空题:2524.1314.-415.i−116.2cos−四、解答题17、解:(1)原式=()()i3-1-2-46-313+++
=i2-1...........................................(5分)(2)原式()()()()iiii21212143+−++=58863−++=ii5i145-+=i5141-+=...
.............(10分)18、解:由题意()()2,3,2,1−==ba()()()22,32,32,1+−=−+=+kkkbak()()()4,102,332,13−=−−=−ba......................................(4分)垂直
时,与当babak3−+有(k-3)10+(2k+2)×(-4)=0解得k=19平行时,与当babak3−+有(k-3)×(-4)-(2k+2)10=0解得k=31-.......................(
8分)故当k=19时,babak3−+与垂直当k=31-时,babak3−+与平行............................(12分)19.解:当复数z为实数时,则有m-1=0,即m=1....
...............................(3分)当复数z为虚数时,则有m-10,即m1.......................................(3分)当复数z为纯虚数时,则有−=+−010232mmm,即m=2..
............................(3分)故当m=1时,复数z为实数当m1时,复数z为虚数艺体班期末试题答案当m=2时,复数z为纯虚数。..............................(3分)20、解:sinB=sin(A+C)=sinAcosC+
cosAsinC=656313125413553=+......................(5分)由正弦定理..BbAasinsin=....................(3分)即13215365631sinsin===ABab....................(
4分)21、(1)解:由已知及正弦定理得()CABBACsincossincossincos2=+()CBACsinsincos2=+()321cos0sin,0sincossin2===
CCCCCCC..............................(8分)(2)由余弦定理Cabbaccos2222−+=214452−+=bb解得()舍或1212−=+=bb.....................................(12分)22
、解:(1)函数的最大值为3A+1=3即A=2..................................(2分)又函数图像相邻的两条对称轴之间距离为2函数的最小正周期为22==.................
.................(6分)函数的解析式为162sin2+−=xy..................................(8分)(2)由(1)知函数的解析式为162sin2+−=xy当4=x时,1642sin2+−=y
艺体班期末试题答案13+=即134+=f.................................(12分)