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1经济数学基础作业(2)答案一、填空题:1、_______________22ln2x2、______________sinCx3、_________________)(CeFx4、_____05、_________________211x二、单项选择题:1、(D)2、(C)3、(C)4、(D)5、(B)三、解答题1、计算下列不定积分:(1)解:Ceedxedxexxxx3ln1333(2)解:Cxxxdxxxxdxxx12312112123212121231121121211)2()1(=Cxxx252352342(3)解:Cxxdxxdxxx221)2(2422(4)解:Cxxdxdxx21ln21)21(21121211(5)解:121121)2()2(21222122xdxdxxxCx1212)2(=Cx232)2(31(6)解:Cxxdxdxxxcos2sin2sin(7)解:Cxxxdxxxxxxddxxx2sin42cos2)2cos2cos(22cos22sin(8)解:Cxxxxdxxxxxxdxxdxx)1ln()1ln()111()1ln()1ln()1ln()1ln(2、计算下列定积分:(1)解:252121)1()1(1212112211121xxxxdxxdxxdxx2(2)解:eeeeexdedxxexxx)()1(2112112121(3)解:2ln12)ln1(1211)ln1()ln1(ln113333111121eeeexxxdxedxxx(4)解:212cos412sin212sin212sin212cos2020202020xxdxxxxxdxdxx(5)解:414141212121ln21ln21ln21ln2122121212121exexdxexdxxxxdxdxxxeeeeee(6)解:40404040404044)1(dxexexdedxxedxdxxexxxxx44045544eeex
本文标题:电大经济数学基础形考册第二次答案
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