Some interesting derivations in Calculus

"Proof problems related to limits.”

[The formula for calculating the distance from a point to a plane and its derivation.](https://jasper-zhang.notion.site/The-formula-for-calculating-the-distance-from-a-point-to-a-plane-and-its-derivation-1cc97bdc95f68004a5d7f478a44d13d9)

[The point-normal form equation of a plane.推导过程](https://jasper-zhang.notion.site/The-point-normal-form-equation-of-a-plane-1cc97bdc95f680609e91c8375efec509)

Some interesting derivations in Linear Algebra

1. 行列式展开

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2. 克莱默法则

   [Derivation of Cramer's Rule = memory technique ](https://jasper-zhang.notion.site/Derivation-of-Cramer-s-Rule-memory-technique-1c597bdc95f6809ea918d8d3be95047c)

3. 伴随矩阵

   1. [The origin of the adjugate matrix](https://jasper-zhang.notion.site/The-origin-of-the-adjugate-matrix-1c997bdc95f6808a80c3e110f6b4b2cb)