课程名称 MATH0006 Algebra 2 数学代数2 课程介绍 A second course in algebra, suitable for first year undergraduates. This course continues from MATH0005. After a short section on number theory, it has two main components. The first is an introduction to the theory of groups; the idea of a g...
2025 is the next PERFECT SQUARE – It comes after the year 1936 44² = Year 1936 45² = Year 2025 It is the sum of the cubes of all the digits from 1 to 9: 1³ + 2³ + 3³ + 4³ + 5³ + 6³ + 7³ + 8³ + 9³ = 2025 It is also the squared sum...
Step 2: Separate the series We can separate the series into two simpler series: \sum_{x=0}^{\infty} \frac{4x + 2}{2^x} = 4\sum_{x=0}^{\infty} \frac{x}{2^x} + 2\sum_{x=0}^{\infty} \frac{1}{2^x} Step 3: Evaluate the geometric series ...
I have retired from the classroom after 42 years as a math teacher in K-12 from counting to calculus. I now work with teachers and schools, and I continue to develop curriculum. I share instructional materials and my views on math education on this blog.MORE Email ***@mathed.page Twit...
Cui got into math after finding an old algebra (代数) book in the school library. Even though algebra was hard, he didn’t give up. “Late nights were spent working out problems, but each breakthrough (突破) felt great,” said Cui.Cui’s m...
Simple math test activities for teachers and students, from beginning math operations to calculus. You set the skill level, number of problems, and time limit. A report, which tallies right and wrong answers, is provided after each quiz. (Grades 3–12; free) ...
2 votes 2 answers 1k views In linear algebra, why is the dual basis of a basis the *rows* of the matrix $A^{-1}$? linear-algebra change-of-basis dual-spaces CommunityBot 1 modified 49 mins ago 1 vote 1 answer 43 views Set of zero divisors equal to union of associated prime...
5 Tips for Co-Parenting After Divorce This paper describes how the TI-92+ calculator can be valuable in illustrating basic and advanced programming concepts in introductory computer science cou... A Pescosolido - For full text: http://archives.math.utk.edu/ICTCM/EP-12/C15/pdf/paper.pdf. 被...
After some time of silence, I'm back. As many of you know, I run this site on my spare time trying to keep it as updated as possible. I'm very pleased to see the positive effect the math tools we offer in our site are having in the community. Countless e-mails thanking me for...
If you are a mathlib contributor and want to update dependencies, uselake update -Kdoc=on. This will update thelake-manifest.jsonfile correctly. You will need to make a PR after committing the changes to this file. Maintainers: For a list containing more detailed information, seehttps://le...