參考:https://blog.csdn.net/jmh1996/article/details/78289915
1、矩陣與行列式
-
矩陣:
D(q)=[p1+p2+2p3cosq2p2+p3cosq2p2+p3cosq2p2]
$$
D(q) = \begin{bmatrix}
p_1+p_2+2p_3cosq_{2} & p_2+p_3cosq_2
\\
p_2+p_3cosq_2 & p_2
\end{bmatrix}
$$
-
省略號:
⎝⎜⎛a11⋮am1…⋱…a1n⋮amn⎠⎟⎞
$$
\begin{pmatrix}
a_{11} & \dots & a_{1n} \\
\vdots & \ddots & \vdots \\
a_{m1} & \dots & a_{mn}
\end{pmatrix}
$$
-
行列式:
∣∣∣∣100−1∣∣∣∣
$$
\begin{vmatrix}
1 & 0 \\
0 & -1
\end{vmatrix}
$$
∥∥∥∥100−1∥∥∥∥
$$
\begin{Vmatrix}
1 & 0 \\
0 & -1
\end{Vmatrix}
$$
2、方程組
⎩⎪⎨⎪⎧方程式一方程式二方程式三123
$$
\begin{cases}
方程式一 & 1 \\
方程式二 & 2 \\
方程式三 & 3 \\
\end{cases}
$$
3、希臘字母
序號 |
大寫 |
小寫 |
md 語法 |
中文名稱 |
1 |
A |
α |
\alpha |
阿爾法 |
2 |
B |
β |
\beta |
貝塔 |
3 |
Γ |
γ |
\gamma |
伽馬 |
4 |
Δ |
δ |
\delta |
德爾塔 |
5 |
E |
ϵ |
\epsilon |
伊普西隆 |
6 |
Z |
ζ |
\zeta |
澤塔 |
7 |
H |
η |
\eta |
伊塔 |
8 |
Θ |
θ |
\theta |
西塔 |
9 |
I |
ι |
\iota |
約塔 |
10 |
K |
κ |
\kappa |
卡帕 |
11 |
Λ |
λ |
\lambda |
蘭姆達 |
12 |
M |
μ |
\mu |
繆 |
13 |
N |
ν |
\nu |
紐 |
14 |
Ξ |
ξ |
\xi |
克西 |
15 |
O |
ο |
\omicron |
歐米克隆 |
16 |
Π |
π |
\pi |
派 |
17 |
P |
ρ |
\rho |
柔 |
18 |
Σ |
σ |
\sigma |
西格瑪 |
19 |
T |
τ |
\tau |
陶 |
20 |
Υ |
υ |
\upsilon |
宇普西隆 |
21 |
Φ |
ϕ |
\phi |
弗愛 |
22 |
X |
χ |
\chi |
卡 |
23 |
Ψ |
ψ |
\psi |
普賽 |
24 |
Ω |
ω |
\omega |
歐米伽 |
|
|
ε |
\varepsilon |
|
|
|
ϰ |
\varkappa |
|
|
|
ϑ |
\vartheta |
|
|
|
ϖ |
\varpi |
|
|
|
ϱ |
\varrho |
|
|
|
ς |
\varsigma |
|
|
|
φ |
\varphi |
|
4、二元關係符
命令前添加 \not
構成否定,如: \not\leq -->
≤
≤ |
≥ |
≡ |
≪ |
≫ |
≐ |
∼ |
≃ |
\leq |
\geq |
\equiv |
\ll |
\gg |
\doteq |
\sim |
\simeq |
≺ |
≻ |
⪯ |
⪰ |
≈ |
≅ |
⋈ |
⋈ |
\prec |
\succ |
\preceq |
\succeq |
\approx |
\cong |
\Join |
\bowtie |
⊂ |
⊃ |
⊆ |
⊇ |
∈ |
∋ |
∈/ |
∝ |
\subset |
\supset |
\subseteq |
\supseteq |
\in |
\ni |
\notin |
\propto |
⊏ |
⊐ |
⊑ |
⊒ |
= |
⌣ |
⌢ |
≍ |
\sqsubset |
\sqsupset |
\sqsubseteq |
\sqsupseteq |
\neq |
\smile |
\frown |
\asymp |
⊢ |
⊣ |
⊨ |
∣ |
∤ |
∥ |
⊥ |
|
\vdash |
\dashv |
\models |
\mid |
\nmid |
\parallel |
\perp |
|
5、 二元運算符
± |
∓ |
⋅ |
÷ |
× |
∖ |
⨿ |
\pm |
\mp |
\cdot |
\div |
\times |
\setminus |
\amalg |
⋆ |
∗ |
∘ |
∙ |
⋄ |
⊲ |
△ |
\star |
\ast |
\circ |
\bullet |
\diamond |
\lhd |
\bigtriangleup |
⊕ |
⊙ |
⊗ |
⊖ |
⊘ |
⊳ |
▽ |
\oplus |
\odot |
\otimes |
\ominus |
\oslash |
\rhd |
\bigtriangledown |
∪ |
∩ |
⊔ |
⊓ |
∨ |
∧ |
⊎ |
\cup |
\cap |
\sqcup |
\sqcap |
\vee |
\wedge |
\uplus |
6、大運算符
∑ |
⨁ |
∏ |
∫ |
⋃ |
⋁ |
⨆ |
\sum |
\bigoplus |
\prod |
\int |
\bigcup |
\bigvee |
\bigsqcup |
⨀ |
⨂ |
∐ |
∮ |
⋂ |
⋀ |
⨄ |
\bigodot |
\bigotimes |
\coprod |
\oint |
\bigcap |
\bigwedge |
\biguplus |
7、三角運算符
⊥ |
∠ |
30∘ |
sin |
cos |
tan |
cot |
sec |
csc |
\bot |
\angle |
30^\circ |
\sin |
\cos |
\tan |
\cot |
\sec |
\csc |
8、微積分運算符
′ |
∫ |
∬ |
∭ |
∮ |
lim |
∞ |
∇ |
\prime |
\int |
\iint |
\iiint |
\oint |
\lim |
\infty |
\nabla |
9、邏輯運算符
∵ |
∴ |
∀ |
∃ |
= |
> |
⊂ |
\because |
\therefore |
\forall |
\exists |
\not= |
\not> |
\not\subset |
10、戴帽符號
y^ |
yˇ |
y~ |
\hat{y} |
\check{y} |
\tilde{y} |
yˋ |
y˙ |
y¨ |
\grave{y} |
\dot{y} |
\ddot{y} |
yˉ |
y |
Y |
\bar{y} |
\vec{y} |
\widehat{Y} |
yˊ |
y˘ |
Y |
\acute{y} |
\breve{y} |
\widetilde{Y} |
11、連線符號
a+b |
a+b |
a+1.0b+c+d2.0 |
\overline{a+b} |
\underline{a+b} |
\overbrace{a+\underbrace{b+c}_{1.0}+d}^{2.0} |
12、箭頭符號
↑ |
⇑ |
→ |
⇒ |
⟶ |
⟹ |
\uparrow |
\Uparrow |
\rightarrow |
\Rightarrow |
\longrightarrow |
\Longrightarrow |
↓ |
⇓ |
← |
⇐ |
⟵ |
⟸ |
\downarrow |
\Downarrow |
\leftarrow |
\Leftarrow |
\longleftarrow |
\Longleftarrow |