Believe in Yourself
Believe in your dreams.
Believe that you are loved.
Believe that you make a different.
Believe we can build a better world.
Believe there’s light at the end of the tunnel.
Believe that you may be that light for someone else.
Believe that the best is yet to be.
Believe in yourself.


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Introduction to Linear Algebra

This is an excerpt of both brief summary and worked examples of each section in the Introduction to Linear Algebra (Fifth Edition) by Gilbert Strang

MIT Course 18.06, Spring 2022

TODO: draw svg format figure by using tikz; Using gather* or align* or array while there is a line break in display mode LaTex.

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英语的语法是一系列的规则, 只要理清和遵循这些规则, 就能写出正确的句子
主从复合句: 至少包含两个谓语(主句一个从句一个)的句子

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省略了不重要的东西(比如集合、函数奇偶性, 弧度制(曲边三角形)等一些谁都懂的概念)
基于 基础版数学笔记

常见集合 自然数: \(N\) , 正整数 \(N^+\) , 整数 \(Z\) , 有理数 \(Q\) , 非零有理数 \(Q^*\), 实数 \(R\) , 复数 \(C\)

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