试过各路大神redhat7安装CentOS7yum源的方法都遇到这个问题:python-urlgrabber>=3.10-8isneededbyyum-3.4.3-150.el7.centos.noarch虽然安装了python-urlgrabber-3.10-8.el7.noarch.rpm但不知道什么原因还是会出现上面的问题。
2024/7/3 18:34:44 1.16MB centos
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opencv2.4.11实现帧差法,检测运动目标,也可使用电脑摄像头,检测运动目标。
代码清晰易懂,直接运行。
2024/6/25 15:33:26 3.61MB opencv 帧差法
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TComm控件V4.11版本;适用:Delphi5,Delphi6,Delphi7,Delphi2005,Delphi2006,Delphi2007,Delphi2010,DelphiXE|andC++Builder3,C++Builder4,C++Builder5,C++Builder6;附有详细英文安装说明。
2024/5/25 21:43:35 557KB Delphi2010 TComm 串口通讯
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将kindeditor与ssm完美整合,如果你不是ssm框架,也没关系,核心的代码都已做了修改。
完美显示文件、图片、视频的上传4.11kindeditor版本:新增:俄语语言包,感谢ValeryVotintsev(http://codersclub.org/)。
改善:语言包文件名标准化,zh_CN->zh-CN,zh_TW->zh-TW。
Bugfix:[IE6]当前页面设置了document.domain,销毁编辑器会报错。
Bugfix:行首全角空格被过滤。
Bugfix:修复多语言包的一些小错误。
Bugfix:[IE11]有些设备报错不能显示,对象不支持attachEvent属性或方法。
Bugfix:retina屏幕上按钮裂开。
Bugfix:编辑图片后点击插入图片,弹出两个dialog。
2024/5/1 4:10:08 9.55MB kindeditor SSM 文件上传 图片批量上传
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QT:QtCreator4.11.1BasedonQt5.14.1(MSVC2017,32bit)BuiltonFeb5202010:36:21
2024/4/26 13:20:04 34KB QT C++
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用算法程序集(C语言描述)(第三版)+源代码第1章多项式的计算1.1一维多项式求值1.2一维多项式多组求值1.3二维多项式求值1.4复系数多项式求值1.5多项式相乘1.6复系数多项式相乘1.7多项式相除1.8复系数多项式相除第2章复数运算2.1复数乘法2.2负数除法2.3复数乘幂2.4复数的n次方根2.5复数指数2.6复数对数2.7复数正弦2.8复数余弦第3章随机数的产生3.1产生0到1之间均匀分布的一个随机数3.2产生0到1之间均匀分布的随机数序列3.3产生任意区间内均匀分布的一个随机整数3.4产生任意区间内均匀分布的随机整数序列3.5产生任意均值与方差的正态分布的一个随机数3.6产生任意均值与方差的正态分布的随机数序列第4章矩阵运算4.1实矩阵相乘4.2复矩阵相乘4.3一般实矩阵求逆4.4一般复矩阵求逆4.5对称正定矩阵的求逆4.6托伯利兹矩阵求逆的特兰持方法4.7求一般行列式的值4.8求矩阵的值4.9对称正定矩阵的乔里斯基分解与列式求值4.10矩阵的三角分解4.11一般实矩阵的QR分解4.12一般实矩阵的奇异值分解4.13求广义逆的奇异值分解法第5章矩阵特征值与特征向量的计算5.1约化对称矩阵为对称三对角阵的豪斯荷尔德变换法5.2求对称三对角阵的全部特征值与特征向量5.3约化一般实矩阵为赫申伯格矩阵的初等相似变换法5.4求赫身伯格矩阵全部特征的QR方法5.5求实对称矩阵特征值与特征向量的雅可比法5.6求实对称矩阵特征值与特征向量的雅可比过关法第6章线性代数方程组的求解6.1求解实系数方程组的全选主元高斯消去法6.2求解实系数方程组的全选主元高斯-约当消去法6.3求解复系数方程组的全选主元高斯消去法6.4求解复系数方程组的全选主元高斯-约当消去法6.5求解三对角线方程组的追赶法6.6求解一般带型方程组6.7求解对称方程组的分解法6.8求解对称正定方程组的平方根法6.9求解大型系数方程组6.10求解托伯利兹方程组的列文逊方法6.11高斯-塞德尔失代法6.12求解对称正定方程组的共岿梯度法6.13求解线性最小二乘文体的豪斯伯尔德变换法6.14求解线性最小二乘问题的广义逆法6.15求解病态方程组第7章非线性方程与方程组的求解7.1求非线性方程一个实根的对分法7.2求非线性方程一个实根的牛顿法7.3求非线性方程一个实根的埃特金矢代法7.4求非线性方程一个实根的连分法7.5求实系数代数方程全部的QR方法7.6求实系数方程全部的牛顿下山法7.7求复系数方程的全部根牛顿下山法7.8求非线性方程组一组实根的梯度法7.9求非线性方程组一组实根的拟牛顿法7.10求非线性方程组最小二乘解的广义逆法7.11求非线性方程一个实根的蒙特卡洛法7.12求实函数或复函数方程一个复根的蒙特卡洛法7.13求非线性方程组一组实根的蒙特卡洛法第8章插值与逼近8.1一元全区间插值8.2一元三点插值8.3连分式插值8.4埃尔米特插值8.5特金逐步插值8.6光滑插值8.7第一种边界条件的三次样条函数插值8.8第二种边界条件的三次样条函数插值8.9第三种边界条件的三次样条函数插值8.10二元三点插值8.11二元全区间插值8.12最小二乘曲线拟合8.13切比雪夫曲线拟合8.14最佳一致逼近的里米兹方法8.15矩形域的最小二乘曲线拟合第9章数值积分9.1变补长梯形求积法9.2变步长辛卜生求积法9.3自适应梯形求积法9.4龙贝格求积法9.5计算一维积分的连分式法9.6高振荡函数求积法9.7勒让德-高斯求积法9.8拉盖尔-高斯求积法9.9埃尔米特-高斯求积法9.10切比雪夫求积法9.11计算一维积分的蒙特卡洛法9.12变步长辛卜生二重积分方法9.13计算多重积分的高斯方法9.14计算二重积分的连分方式9.15计算多重积分的蒙特卡洛法第10章常微分方程组的求解10.1全区间积分的定步长欧拉方法10.2积分一步的变步长欧拉方法10.3全区间积分维梯方法10.4全区间积分的定步长龙格-库塔方法10.5积分一步的变步长龙格-库塔方法10.6积分一步的变步长基尔方法10.7全区间积分的变步长默森方法10.8积分一步的连分方式10.9全区间积分的双边法10.10全区间积分的阿当姆斯预报校正法10.11全区间积分的
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http://ankhsvn.open.collab.net/AnkhSVN2.4released!(Thursday,August23,2012)AnkhSVNisaSubversionSourceControlProviderforMicrosoftVisualStudio2005,2008,2010and2012.AnkhSVNprovidesApache™Subversion®sourcecodemanagementsupporttoallprojecttypessupportedbyVisualStudioandallowsyoutoperformthemostcommonversioncontroloperationsdirectlyfrominsidetheMicrosoftVisualStudioIDE.ThePendingChangesdashboardgivesyouauniqueinsightinyourdevelopmentprocessandprovideseasyaccesstothesourcecodeandissuemanagementfeatures.Thedeepsourcecodecontrol(SCC)integrationallowsyoutofocusondeveloping,whileAnkhSVNkeepstrackofallyourchangesandprovidesyouthetoolstoeffectivelyhandleyourspecificneeds.
2024/3/21 2:50:22 3.95MB AnkhSvn 2.4.x
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第一章USB概述及协议基础11.1USB是什么11.2USB的特点11.3USB的拓扑结构21.4USB的电气特性51.5USB的线缆以及插头、插座51.6USB的插入检测机制71.7USB的描述符及其之间的关系91.8USB设备的枚举过程101.9USB的包结构及传输过程111.9.1USB包的结构及包的分类111.9.2令牌包131.9.3数据包141.9.4握手包141.9.5特殊包151.9.6如何处理数据包151.10USB的四种传输类型161.10.1USB事务161.10.2批量传输161.10.3中断传输181.10.4等时传输(同步传输)191.10.5控制传输201.10.6端点类型与传输类型的关系211.10.7传输类型与端点支持的最大包长211.11本章小结21第二章硬件系统设计12.1方案以及芯片的选定12.2D12引脚功能说明22.3D12与89S52的连接42.4串口部分电路62.5按键部分72.6指示灯部分72.7IDE接口部分82.8单片机部分82.9元件安装82.10电路调试112.11测试程序的编写和调试122.11.1建立一个工程122.11.2为工程添加源文件142.11.3KEIL工具栏及仿真介绍152.11.4按键驱动的编写182.11.5串口驱动的编写242.11.6PDIUSBD12读写函数及读ID的实现282.12本章小结33第三章USB鼠标的实现13.1USB鼠标工程的建立13.2USB的断开与连接13.3USB中断的处理43.4读取从主机发送到端点0的数据63.5USB标准请求123.5.1USB标准设备请求的结构133.5.2GET_DESCRIPTOR请求153.5.3SET_ADDRESS请求163.5.6SET_CONFIGURATION请求163.6设备描述符的实现173.7设备描述符的返回203.8设置地址请求的处理303.9配置描述符集合的结构323.9.1配置描述符的结构323.9.2接口描述符的结构333.9.3端点描述符的结构333.9.4HID描述符的结构343.10配置描述符集合的实现以及返回353.11字符串及语言ID请求的实现393.12设置配置请求的实现453.13报告描述符的结构及实现483.14报告的返回543.15BusHound工具的简介573.16本章小结59第四章USB键盘的实现14.1USB键盘工程的建立14.2设备描述符的实现14.4配置描述符集合的实现24.4.1配置描述符34.4.2接口描述符34.4.3HID描述符34.4.4端点描述34.5字符串描述符64.6报告描述符64.7输入和输出报告的实现104.8USB键盘实例的测试134.9再谈USBHID的报告描述符144.10带鼠标功能的USB键盘(方法一)164.11带鼠标功能的键盘(方法二)224.12多媒体USB键盘294.13本章小结34第五章用户自定义的USBHID设备15.1MyUsbHid工程的建立15.2描述符的修改15.3报告的实现35.4对用户自定义的USBHID设备的访问55.5访问HID设备时所用到的相关函数55.5.1获取HID设备的接口类GUID的函数
2024/3/16 16:12:34 19.65MB 圈圈教你玩USB 全书 151-313页
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junit4.11.jar+hamcrest-core1.3.jar+hamcrest-library1.3.jar完整版
2024/2/8 14:10:25 293KB junit4.11 hamcrest
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DifferentialEquationsandLinearAlgebra(4th)英文无水印原版pdf第4版pdf所有页面使用FoxitReader、PDF-XChangeViewer、SumatraPDF和Firefox测试都可以打开本资源转载自网络,如有侵权,请联系上传者或csdn删除查看此书详细信息请在美国亚马逊官网搜索此书EditorialDirector,Mathematics:ChristinehoagEditor-in-Chief:DeirdreLynchAcquisitionsEditor:WilliamHoffmaProjectTeamLead:ChristinaleProjectmanager:LaurenMorseEditorialAssistant:JenniferSnyderProgramTeamLead:KarenwernholmProgramManagerDaniellesimbajonCoverandillustrationDesign:StudioMontageProgramDesignLead:BethPaquinProductMarketingManagerClaireKozarProductMarketingCoordiator:BrookesmithFieldMarketingManager:EvanStCyrSeniorAuthorSupport/TechnologySpecialist:JoevetereSeniorProcurementSpecialist:CarolMelvilleInteriorDesign,ProductionManagement,AnswerArt,andCompositioneNergizerAptara,LtdCoverImage:LighttrailsonmodernbuildingbackgroundinShanghai,China-hxdyl/123RFCopyrightO2017,2011,2005PearsonEducation,Inc.oritsaffiliates.AllRightsReserved.PrintedintheUnitedStatesofAmerica.Thispublicationisprotectedbycopyright,andpermissionshouldbeobtainedfromthepublisherpriortoanyprohibitedreproduction,storageinaretrievalsystem,ortransmissioninanyformorbyanymeans,electronic,mechanical,photocopyingrecording,orotherwise.Forinformationregardingpermissions,requestformsandtheappropriatecontactswithinthePearsonEducationGlobalRights&Permissionsdepartmentpleasevisitwww.pearsoned.com/permissions/PEARSONandALWAYSLEARNINGareexclusivetrademarksintheU.s.and/orothercountriesownedbyPearsonEducation,Inc.oritsaffiliatesUnlessotherwiseindicatedherein,anythird-partytrademarksthatmayappearinthisworkarethepropertyoftheirrespectiveowandanyreferencestothird-partytrademarks,logosorothertradedressarefordemonstrativeordescriptivepurposesonly.SuchofsuchmarksoranyrelationshipbetweentheownerandPearsonEducation,Inc.oritsaffiliates,authors,licenseesordistributortreferencesarenotintendedtoimplyanysponsorship,endorsement,authorization,orpromotionofPearsonsproductsbytheownersLibraryofCongressCataloging-in-PublicationDataGoode.StephenwDifferentialequationsandlinearalgebra/StephenW.GoodeandScottA.AnninCaliforniastateUniversity,Fullerton.-4theditionpagescmIncludesindexISBN978-0-321-96467-0—ISBN0-32196467-51.Differentialequations.2.Algebras,Linear.I.Annin,Scott.II.TitleQA371.G6442015515’.35-dc23201400601512345678910V031-1918171615PEARSONISBN10:0-321-96467-5www.pearsonhighered.comISBN13:978-0-321-96467-0ContentsPrefacevii1First-OrderDifferentialEquations1.1DifferentialEquationsEverywhere11.2BasicIdeasandTerminology131.3TheGeometryofFirst-OrderDifferentialEquations231.4SeparableDifferentialEquations341.5SomeSimplePopulationModels451.6First-OrderLinearDifferentialEquations531.7ModelingProblemsUsingFirst-OrderLinearDifferentialEquations61.8Changeofvariables711.9ExactDifferentialEquations821.10Numericalsolutiontofirst-OrderDifferentialEquations931.11SomeHigher-OrderDifferentialEquations1011.12ChapterReview1062MatricesandSystemsofLinearEquations1142.1Matrices:Definitionsandnotation1152.2MatrixAlgebra1222.3TerminologyforSystemsofLinearEquations13824R。
w-EchelonMatricesandElementaryR。
wOperations1462.5Gaussianelimination1562.6TheInverseofasquarematrix1682.7ElementaryMatricesandtheLUFactorization1792.8TheInvertiblematrixtheoremi1882.9ChapterReview1903Determinants1963.1TheDefinitionofthedeterminant1963.2PropertiesofDeterminants2093.3CofactorExpansions2223.4SummaryofDeterminants2353.5ChapterReview242iyContents4VectorSpaces2464.1Vectorsinrn2484.2DefinitionofaVectorSpace2524.3Subspaces2634.4SpanningSets2744.5LinearDependenceandLinearIndependence2844.6Basesanddimension2984.7Changeofbasis3114.8RowSpaceandColumnSpace3194.9TheRank-NullityTheorem3254.10InvertibleMatrixTheoremll3314.11ChapterReview3325InnerProductSpaces3395.1DefinitionofanInnerproductspace3405.2OrthogonalSetsofvectorsandorthogonalProjections3525.3Thegram-Schmidtprocess3625.4LeastSquaresApproximation3665.5ChapterReview3766LinearTransformations3796.1Definitionofalineartransformation3806.2Transformationsofr23916.3TheKernelandrangeofalineartransformation3976.4AdditionalPropertiesofLinearTransformations4076.5Thematrixofalineartransformation4196.6Chaiterreview4287EigenvaluesandEigenvectors4337.1TheEigenvalue/EigenvectorProblem4347.2GeneralResultsforEigenvaluesandEigenvectors4467.3Diagonalization4547.4AnIntroductiontotheMatrixExponentialFunction4627.5OrthogonalDiagonalizationandQuadraticforms4667.6Jordancanonicalforms4757.7Chapterreview4888LinearDifferentialEquationsofOrdern4938.1GeneralTheoryforLinearDifferentialEquations4958.2ConstantCoefficientHomogeneousLinearDifferentialEquations5058.3ThemethodofundeterminedcoefficientsAnnihilators5158.4Complex-ValuedTrialSolutions5268.5OscillationsofaMechanicalSystem529Contentsv8.6RLCCircuits5428.7TheVariationofparametersmethod5478.8ADifferentialEquationwithNonconstantCoefficients5578.9Reductionoforder5688.10ChapterReview5739SystemsofDifferentialEquations5809.1First-OrderLinearSystems5829.2VectorFormulation5889.3GeneralResultsforfirst-OrderLinearDifferentialystems5939.4VectorDifferentialEquations:NondefectiveCoefficientMatrix5999.5VectorDifferentialEquations:DefectiveCoefficientMatrix6089.6Variation-of-ParametersforLinearSystems6209.7SomeApplicationsofLinearSystemsofDifferentialEquations6259.8MatrixExponentialFunctionandSystemsofDifferentialEquations6359.9ThePhasePlaneforLinearAutonomousSystems6439.10NonlinearSystems6559.11ChapterReview66310TheLaplaceTransformandSomeElementaryApplications67010.1DefinitionoftheLaplaceTransform67010.2TheExistenceofthelaplacetransformandtheInversetransform67610.3PeriodicFunctionsandtheLaplacetransform68210.4ThetransformofderivativesandsolutionofInitial-Valueproblems68510.5TheFirstShiftingTheorem69010.6TheUnitStepFunction69510.7TheSecondShiftingTheorem69910.8ImpulsiveDrivingTerms:TheDiracDeltaFunction70610.9TheConvolutionIntegral71110.10ChapterReview71711SeriesSolutionstoLinearDifferentiaEquations72211.1AReviewofpowerseries72311.2SeriesSolutionsaboutanOrdinaryPoint73111.3TheLegendreEquation74111.4SeriesSolutionsaboutaRegularSingularPoint75011.5Frobeniustheory75911.6Bessel'sEquationofOrderp77311.7Chapterreview785ViContentsAReviewofComplexNumbers791BReviewofPartialFractions797CReviewofIntegrationTechniques804DLinearlyIndependentSolutionstox2y+xp(x)y+g(x)y=0811Answerstoodd-NumberedExercises814Index849S.W.GoodededicatesthisbooktomeganandtobiS.A.annindedicatesthisbooktoarthurandJuliannthebestparentsanyonecouldaskforPretraceLikethefirstthreeeditionsofDifferentialEquationsandLinearalgebra,thisfourtheditionisintendedforasophomorelevelcoursethatcoversmaterialinbothdifferentialequationsandlinearalgebra.Inwritingthistextwehaveendeavoredtodevelopthestudentsappreciationforthepowerofthegeneralvectorspaceframeworkinformulatingandsolvinglinearproblems.Thematerialisaccessibletoscienceandengineeringstu-dentswhohavecompletedthreesemestersofcalculusandwhobringthematurityofthatsuccesswiththemtothiscourseThistextiswrittenaswewouldnaturallyteachblendinganabundanceofexamplesandillustrations,butnotattheexpenseofadeliberateandrigoroustreatment.MostresultsareprovenindetailHowever,manyofthesecanbeskippedinfavorofamoreproblem-solvingorientedapproachdependingonthereader'sobjectives.Somereadersmayliketoincorporatesomeformoftechnology(computeralgebrasystem(CAS)orgraphingcalculator)andthereareseveralinstancesinthetextwherethepoweroftechnologyisillustratedusingtheCasMaple.Furthermore,manyexercisesetshaveproblemsthatrequiresomeformoftechnologyfortheirsolutionTheseproblemsaredesignatedwithaoIndevelopingthefourtheditionwehaveoncemorekeptmaximumflexibilityofthematerialinmind.Insodoing,thetextcaneffectivelyaccommodatethedifferentemphasesthatcanbeplacedinacombineddifferentialequationsandlinearalgebracourse,thevaryingbackgroundsofstudentswhoenrollinthistypeofcourse,andthefactthatdifferentinstitutionshavedifferentcreditvaluesforsuchacourse.Thewholetextcanbecoveredinafivecredit-hourcourse.Forcourseswithalowercredit-hourvalue,someselectivitywillhavetobeexercised.Forexample,much(orall)ofChapterImaybeomittedsincemoststudentswillhaveseenmanyofthesedifferentialequationstopicsinanearliercalculuscourse,andtheremainderofthetextdoesnotdependonthetechniquesintroducedinthischapter.Alternatively,whileoneofthemajorgoalsofthetextistointerweavethematerialondifferentialequationswiththetoolsfromlinearalgebrainasymbioticrelationshipasmuchaspossible,thecorematerialonlinearalgebraisgiveninChapters2-7sothatitispossibletousethisbookforacoursethatfocusessolelyonthelinearalgebrapresentedinthesesixchapters.ThematerialondifferentialequationsiscontainedprimarilyinChapters1and8-1l,andreaderswhohavealreadytakenafirstcourseinlinearalgebracanchoosetoproceeddirectlytothesechaptersThereareothermeansofeliminatingsectionstoreducetheamountofmaterialtobecoveredinacourse.Section2.7containsmaterialthatisnotrequiredelsewhereinthetext,Chapter3canbecondensedtoasinglesection(Section3.4)forreadersneedingonlyacursoryoverviewofdeterminants,andSections4.7,5.4,andthelatersectionsofChapters6and7couldallbereservedforasecondcourseinlinearalgebra.InChapter8Sections8.4,8.8,and8.9canbeomitted,and,dependingonthegoalsofthecourse,Sections8.5and8.6couldeitherbede-emphasizedoromittedcompletelySimilarremarksapplytoSections9.7-9.10.AtCaliforniaStateUniversity,Fullertonwehaveafourcredit-hourcourseforsophomoresthatisbasedaroundthematerialinChapters1-9viiiPrefaceMajorChangesintheFourthEditionSeveralsectionsofthetexthavebeenmodifiedtoimprovetheclarityofthepresentationandtoprovidenewexamplesthatreflectinsightfulillustrationswehaveusedinourowncoursesatCaliforniaStateUniversity,Fullerton.OthersignificantchangeswithinthetextarelistedbeleOW1.ThechapteronvectorspacesinthepreviouseditionhasbeensplitintotwochaptersChapters4and5)inthepresentedition,inordertofocusseparateattentiononvectorspacesandinnerproductspaces.Theshorterlengthofthesetwochaptersisalsointendedtomakeeachofthemlessdaunting2.Thechapteroninnerproductspaces(Chapter5)includesanewsectionprovidinganapplicationoflinearalgebratothesubjectofleastsquaresapproximation3.Thechapteronlineartransformationsinthepreviouseditionhasbeensplitintotwochapters(Chapters6and7)inthepresentedition.Chapter6isfocusedonlineartransformations,whileChapter7placesdirectemphasisonthetheoryofeigenvaluesandeigenvectors.Oncemore,readersshouldfindtheshorterchapterscoveringthesetopicsmoreapproachableandfocused4.Mostexercisesetshavebeenenlargedorrearranged.Over3,000problemsarenowcontainedwithinthetext,andmorethan600concept-orientedtrue/falseitemsarealsoincludedinthetext5.Everychapterofthebookincludesoneormoreoptionalprojectsthatallowformorein-depthstudyandapplicationofthetopicsfoundinthetext6.ThebackofthebooknowincludestheanswertoeveryTrue-FalsereviewitemcontainedinthetextAcknowledgmentsWewouldliketoacknowledgethethoughtfulinputfromthefollowingreviewersofthefourthedition:JameyBassofCityCollegeofSanFrancisco,TamarFriedmannofUniversityofrochester,andlinghaiZhangofLehighUniversityAlloftheircommentswereconsideredcarefullyinthepreparationofthetextS.A.Annin:Ioncemorethankmyparents,ArthurandJuliannAnnin,fortheirloveandencouragementinallofmyprofessionalendeavors.Ialsogratefullyacknowledgethemanystudentswhohavetakenthiscoursewithmeovertheyearsand,insodoinghaveenhancedmyloveforthesetopicsanddeeplyenrichedmycareerasaprofessorFirst-OrderDifferentiaEquations1.1DifferentialEquationsEverywhereadifferentialequationisanyequationthatinvolvesoneormorederivativesofanunknownfunction.Forexample(1.1.1dxds(S-1)(1.1.2)aredifferentialequations.Inthedifferentialequation(1.1.1)theunknownfunctionordependentvariableisy,andxistheindependentvariable;inthedifferentialequation(1.1.2)thedependentandindependentvariablesareSandt,respectively.Differentialequationssuchas(1.1.1)and(1.1.)inwhichtheunknownfunctiondependsonlyonasingleindependentvariablearecalledordinarydifferentialequations.Bycontrast,thedifferentialequationLaplace'sequation)0involvespartialderivativesoftheunknownfunctionu(x,y)oftwoindependentvariablesxandy.SuchdifferentialequationsarecalledpartialdifferentialequationsOnewayinwhichdifferentialequationscanbecharacterizedisbytheorderofthehighestderivativethatoccursinthedifferentialequationThisnumberiscalledtheorderofthedifferentialequation.Thus,(l1.1)hasordertwo,whereas(1.1.2)isafirst-orderdifferentialequation1
2024/1/26 14:10:04 16.51MB Differential Equations Linear Algebra
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在日常工作中,钉钉打卡成了我生活中不可或缺的一部分。然而,有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚,我总是得牢记打开钉钉应用,点击"工作台",再找到"考勤打卡"进行签到。有时候因为工作忙碌,会忘记打卡,导致考勤异常,影响当月的工作评价。而且,由于我使用的是苹果手机,有时候系统更新后,钉钉的某些功能会出现异常,使得打卡变得更加麻烦。 另外,我的家人使用的是安卓手机,他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说,每次打卡都是一次挑战。他们总是担心自己会操作失误,导致打卡失败。 为了解决这些烦恼,我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习,我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。
2024-04-09 15:03 15KB 钉钉 钉钉打卡