Re: [問題] array
程式碼修改為下, Therefore 會跟 Let 對齊
原來的問題是那個內容編不過, 很多東西有缺
\documentclass[12pt,english]{article}
\usepackage{amsmath}
\begin{document}
\begin{flushleft}
\Large{Strauss PDE Exercises 1.2.}
\end{flushleft}
\begin{flushleft}
\begin{itemize}
\item[{\large 1.2.8.}]
Let $\left\{ \begin{array}{cc} x' = ax + by &
y' = bx - ay \end{array} \right.
\Rightarrow \left\{ \begin{array}{cc}
u_{x} = au_{x'} + bu_{y'} &
u_{y} = bu_{x'} - au_{y'}
\end{array}
\right.$ .\\
Therefore,
\begin{align}
& \text{ }au_{x}+bu_{y}+cu = a^{2} u_{x'} + b^{2} u_{x'}+cu =0
\notag \\
\Leftrightarrow & \text{ }u_{x'} = \frac{-c}{a^{2}+b^{2}} u
\notag \\
\Leftrightarrow & \text{ }u = C_{1}(y') \exp \left(\frac{-c}{a^{2}+b^{2}} x'
\right) =:
f(bx-ay) \exp \left(\frac{-c(ax+by)}{a^{2}+b^{2}}
\right) . \notag
\end{align}
\end{itemize}
\end{flushleft}
\end{document}
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 68.3.196.84
推
03/31 10:12, , 1F
03/31 10:12, 1F
推
03/31 10:15, , 2F
03/31 10:15, 2F
→
03/31 12:16, , 3F
03/31 12:16, 3F
推
03/31 14:28, , 4F
03/31 14:28, 4F
討論串 (同標題文章)
LaTeX 近期熱門文章
PTT數位生活區 即時熱門文章
