定义2.1.2酉矩阵：若一个n×n阶的复数矩阵U满足U=AHA=E,其中矩阵E为n阶单位矩阵，AH为U的共轭转置，则称U为酉矩阵0，定义2.1.3对角矩阵：在矩阵中，如果除了主对角线，其它元素均满足等于0的条...

AbstractMathematics educator stolyard thinks:'mathematics activity is mathematicsthinking activity,the student's mathematics activity is the positive thinking activity inmathematic...

AbstractThe number of old people in rural areas is increasing every year,and the largenumber of old people makes the retirement problem of farmers increasingly serious.Establishing...

目录1.绪论.…1.1选题意义….31.2文献综述..31.2.1国内研究情况31.2.2国外研究情况.41.3研究思路及方法42。应用题的内涵和教育意义..52.1应用题的内涵.52.2应用题的教育意义.53.初中和高中应用...

Investigation and Analysis of the Quality of Questions Raised by Students inJunior High School Math Classes-Taking X High School in S City as AnExampleAbstract With further researc...

湖南理工学院本科毕业论文AbstractIn this paper,we first understand the concept and properties of the jointdistribution of two-dimensional random variables and their two basic expres...

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AbstractAfter the gradual popularization of quality-oriented education,the importance ofintegrating the history of mathematics into the teaching of mathematics has beenconstantly i...

目录引言.1.文献综述。..............................................1.1研究现状.…011.1.1国外研究现状..11.1.2国内研究现状.12。试卷与教材中相遇与追击问题的分布状况分析.22.1相遇与追击...

AbstractDynamically based on the junior high school geometry problems of typical errorsand problem-solving strategies as the research content,the quanzhou nearly five yearsexceeded...