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1、揚(yáng)州大學(xué)2014級(jí)高等數(shù)學(xué)Ⅰ(2)期中考試試題班級(jí) 學(xué)號(hào) 姓名 得分 一、選擇題(每小題3分,共18分)1.對(duì)于二元函數(shù),下列結(jié)論中正確的是( ?。粒羝珜?dǎo)數(shù)與都存在,則必在點(diǎn)處連續(xù)B.若偏導(dǎo)數(shù)與都存在,則必在點(diǎn)處可微C.若與都存在,則必有D.若在點(diǎn)處可微,則在點(diǎn)處沿任一方向的方向?qū)?shù)都存在2.設(shè)函數(shù)的全微分為,則( ?。粒皇菢O值,是極大值 ?。拢皇菢O值,是極小值C.是極小值,是極大值 D.是極大值,是極小值3.設(shè)函數(shù)由方程確定,其中為可導(dǎo)函數(shù),為常數(shù),則( ).?。粒 。拢 。茫 。模?.二次積分交換積分
2、次序后得( ?。瓵. B.C. D.5.二次積分的極坐標(biāo)形式為( ).otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasb
3、eentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand第5頁(yè) 共6頁(yè)A. ?。拢茫 。模?.設(shè)函數(shù)滿足,則與依次為( ?。粒 。拢 。茫 。模?、計(jì)算題(每小題7分,共70分)7.設(shè),求,及.8.設(shè)是由方程所確定的函數(shù),求.ot
4、herstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterp
5、risesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand第5頁(yè) 共6頁(yè)9.設(shè),其中函數(shù)具有二階連續(xù)偏導(dǎo)數(shù),求.10.求曲線在點(diǎn)處的切線方程與法平面方程.11.設(shè)函數(shù),求(1)在點(diǎn)處沿從該到點(diǎn)的方向的方向?qū)?shù);(2)在點(diǎn)處的方向?qū)?shù)的最大值.otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,an
6、dDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCo
7、mmitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand第5頁(yè) 共6頁(yè)12.求二元函數(shù)的極值.13.在曲面的第一卦限部分上求一點(diǎn),使這點(diǎn)到坐標(biāo)原點(diǎn)的距離最短.otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirect