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论坛公式颜色是什么代码

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isee Posted at 2013-9-29 11:04:49 |Read mode
把上面的向量法,提炼与改进一下有:(注:即便用向量求E分BM,D分BA等线段的比值,亦有很多方式,楼上仅供参考)
如将公式\eqref{teq03}全部加为红色

\begin{align}
\vv {CE}&=\dfrac 45 \vv {CM}+\dfrac 15 \vv {CB}\\
\vv {CD}&=\dfrac 23 \vv {CA}+\dfrac 13 \vv {CB}\\
\vv {MD}&=-\dfrac 13 \vv {MC}+\dfrac 13 \vv {CB}\label{teq03}\\
\Rightarrow \vv {MD}^2&=\dfrac 59 \vv {MC}^2\\
\vv {MB}&=\vv {MC}+\vv {CB}\tag{4}\label{eq04}\\
\Rightarrow \vv {MB}^2&=5 \vv {MC}^2\\
\therefore MD^2&=\dfrac 19 MB^2\\[2em]
\Rightarrow 3MD&=MB
\end{align}

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kuing Posted at 2013-9-29 11:52:08
\begin{align}
\vv {CE}&=\dfrac 45 \vv {CM}+\dfrac 15 \vv {CB}\\
\vv {CD}&=\dfrac 23 \vv {CA}+\dfrac 13 \vv {CB}\\
\color{red}{\vv {MD}}&\color{red}{=-\dfrac 13 \vv {MC}+\dfrac 13 \vv {CB}}\\
\Rightarrow \vv {MD}^2&=\dfrac 59 \vv {MC}^2\\
\vv {MB}&=\vv {MC}+\vv {CB}\\
\Rightarrow \vv {MB}^2&=5 \vv {MC}^2\\
\therefore MD^2&=\dfrac 19 MB^2\\[2em]
\Rightarrow 3MD&=MB
\end{align}

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hbghlyj Posted at 2023-7-26 02:51:04
观察stroke和fill为currentcolor(Math Render选用SVG的好处之一)
公式与周围文本颜色相同。
例如:红色文本中公式$\sqrt{x^2+y^2}$也是红色。

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