sln公式ctex公式输入

2020年10月18日发(作者：田松)
$$x=frac{1+y}{1+2z^2}$$
(inline)
$$$$x=frac{1+y}{1+2z^2}$$$$
(displayed)
$$int_0^infty e^{-x^2} dx=frac{sqrt{pi}}{2}$$
(inline)
$$$$int_0^infty
dx=frac{sqrt{pi}}{2}$$$$
(displayed)
$$displaystyle int_0^infty e^{-x^2} dx$$
(inline)
e^{-x^2}
$$$$ frac{1}{displaystyle 1+
frac{1}{displaystyle 2+ frac{1}{displaystyle
3+x}}} + frac{1}{1+frac{1}{2+frac{1}{3+x}}}
$$$$
Spaces and Text in Formulas
$$sqrt{2} sin x$$, $$sqrt{2},sin x$$
$$int !!
f(x,y),mathrm{d}xmathrm{d}y$$
int
$$$$ mathop{int !!! int}_{mathbf{x} in
mathbf{R}^2} ! langle
mathbf{x},mathbf{y}rangle ,dmathbf{x} $$$$
$$$$ x_1 = a+b mbox{ and } x_2=a-b $$$$
$$$$ x_1 = a+b ~~mbox{and}~~ x_2=a-b $$$$
Multiple Line Equations
begin{eqnarray} y &=& x^4 + 4
nonumber &=& (x^2+2)^2
-4x^2 nonumber
&le&(x^2+2)^2 end{eqnarray}
begin{eqnarray*} e^x&approx&
1+x+x^22! + && {}+x^33! +
x^44! + && + x^55!
end{eqnarray*}
begin{eqnarray*}
lefteqn{w+x+y+z
end{eqnarray*}
= }
&&a+b+c+d+e+ && {}+f+g+h+i
begin{eqnarray*} x&=&sin
alpha = cos beta
&=&cos(pi-alpha) =
sin(pi-beta) end{eqnarray*}
{setlengtharraycolsep{0.1em}
begin{eqnarray*}
alpha = cos
x&=&sin
beta
&=&cos(pi-alpha) =
sin(pi-beta) end{eqnarray*} }
$$$$setlengtharraycolsep{0.1em}
begin{array}{rclcl} x&=&sin
alpha &=& cos beta
&=&cos(pi-alpha) &=&
sin(pi-beta) end{array} $$$$
Formula Numbering
begin{equation} x=y+3 label{eq:xdef}
end{equation} In equation (ref{eq:xdef}) we
saw $$dots$$
usepackage{leqno} ... begin{equation}
x=y+3 label{eq:xdef} end{equation} In
equation (ref{eq:xdef}) we saw $$dots$$
begin{equation} begin{array}{l}
displaystyle int 1 = x + C displaystyle int
x = frac{x^2}{2} + C displaystyle int x^2 =
frac{x^3}{3} + C end{array} label{eq:xdef}
end{equation}
begin{eqnarray} && int 1 = x + C
nonumber && int x = frac{x^2}{2} + C
nonumber && int x^2 = frac{x^3}{3} + C
label{eq:xdef} end{eqnarray}
Braces
$$left] 0,1 right[ + lceil x rfloor -
langlex,yrangle$$
$$$$
$$$$ |x| = left{ begin{array}{rl} -x
&mbox{ if $$x<0$$} x
&mbox{ otherwise}
right. $$$$
end{array}
$$$$ F(x,y)=0 ~~mbox{and}~~ left|
begin{array}{ccc} F''_{xx} & F''_{xy}
&F'_x F''_{yx} & F''_{yy} &F'_y
F'_x&F'_y& 0 end{array}right| = 0
$$$$
$$$$ underbrace{n(n-1)(n-2)dots(n-m
+1)}_ {mbox{total of $$m$$ factors}}
$$$$
Accents
Accents in text mode:
garc con 'i{} i t`o's.g^o na
vena
Accents in math mode:
$$hat{x}$$, $$check{x}$$,
$$bar{ell}$$, $$dot{y}$$,
$$vec{z_1}$$, $$vec{z}_1$$
$$tilde{a}$$,
$$ddot{y}$$,
Wide accents, under and overline:
$$hat{T} = widehat{T}$$, $$bar{T} =
overline{T}$$, $$widetilde{xyz}$$,
$$overbrace{a+underbrace{b+c}+d}$$
$$$$ overline{overline{a}^2+underline{xy}
+overline{overline{z}}} $$$$
Sub and superscripts to braces:
$$$$ underbrace{a+overbrace{b+cdots}^{{}
=t}+z} _{mathrm{total}} ~~
a+{overbrace{b+cdots}}^{126}+z $$$$