LaTeX无序号公式排版技巧

LaTeX无序号公式排版技巧

无序号公式排版代码如下，
使用&符号可以使每行指定位置与上一行对齐：

\begin{equation}\nonumber
\begin{aligned}
\mathbb{E}(XY)&=\int_{0}^{1}\int_{0}^{u}uv\times p_{XY}(u,v)\mathrm{d}u\mathrm{d}v\\
&=\int_{0}^{1}\int_{0}^{u}uv\times4u^2\mathrm{d}u\mathrm{d}v\\
&=\int_{0}^{1}\int_{0}^{u}4u^3 v\mathrm{d}u\mathrm{d}v\\
&=\int_{0}^{1}4u^3\mathrm{d}u\int_{0}^{u}v\mathrm{d}v\\
&=\int_{0}^{1}4u^3\mathrm{d}u\times\frac{1}{2}v^2\big|_{0}^{u}\\
&=\int_{0}^{1}2u^5\mathrm{d}u\\
&=\frac{1}{3}u^6\big|_{0}^{1}\\
&=\frac{1}{3}
\end{aligned}
\end{equation}

输出结果如下：