什么是矩阵 形如 ( 1 3 2 4 5 6 ) \left(\begin{array}{ll}{1} & {3} \\ {2} & {4} \\ {5} & {6}\end{array}\right) ⎝ ⎛ 1 2 5 3 4 6 ⎠ ⎞ 矩阵加减 例如，已知 A = ( 1 3 2 4 5 6 ) A=\left(\begin{array}{ll}{1...
线性代数，临时抱佛脚速撸系列（2）矩阵
微积分，相关公式列表
The Theorem of Pythagoras(毕达哥拉斯定理) a 2 + b 2 = c 2 a^{2}+b^{2}=c^{2} a 2 + b 2 = c 2 if c c c is the length of the hypotenuse and a a a and b b b are the shorter side lengths of a right-angled triangl...
Precalculus
Real line, decimals and significant figures(实线，小数，和有效数字) Sets and elements A set is a collection of objects, referred to as elements. A set may be represented, for example, by a list of elements surro...
线性代数，临时抱佛脚速撸系列（1）行列式
什么是行列式 ∣ 1 2 2 3 ∣ ( 二阶行列式 ) \begin{aligned}\left|\begin{array}{ll}{1} & {2} \\ {2} & {3}\end{array}\right| \end{aligned} \quad(\text { 二阶行列式 }) ∣ ∣ ∣ ∣ 1 2 2 3 ∣ ∣ ∣ ∣ ( 二阶行列式 ...