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Commit 2c33020b authored by Claude Meny's avatar Claude Meny
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Update cheatsheet.fr.md

parent b986a9d8
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    12.temporary_ins/08.grad-div-rot/20.div/20.overview/cheatsheet.fr.md
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    ...@@ -34,7 +34,7 @@ div\,\overrightarrow{X}}\color{black}{\;=\dfrac{d\Phi_X}{d\tau}}\, = &\dfrac{1}{ ...@@ -34,7 +34,7 @@ div\,\overrightarrow{X}}\color{black}{\;=\dfrac{d\Phi_X}{d\tau}}\, = &\dfrac{1}{
    ****$`\mathbf{\begin{align} ****$`\mathbf{\begin{align}
    div\,\overrightarrow{X} = \color{black}{\;=\dfrac{d\Phi_X}{d\tau}}\,= &\dfrac{1}{r^2}\;\dfrac{\partial\,(r^2\,X_r}{\partial\,r}\\ div\,\overrightarrow{X} = \color{black}{\;=\dfrac{d\Phi_X}{d\tau}}\,= &\dfrac{1}{r^2}\;\dfrac{\partial\,(r^2\,X_r}{\partial\,r}\\
    & \boldsymbol{\quad\quad\dfrac{1}{r\,sin\,\theta}\;\dfrac{\partial\,(sin\,\theta\,X_{\theta})}{\partial\,\theta}}\\ & \quad\quad\dfrac{1}{r\,sin\,\theta}\;\dfrac{\partial\,(sin\,\theta\,X_{\theta})}{\partial\,\theta}\\
    & \boldsymbol{\quad\quad\quad\quad\dfrac{1}{r\,sin\,\theta}\;\dfrac{\partial\,X_{\varphi}}{\partial\,\varphi}} & \quad\quad\quad\quad\dfrac{1}{r\,sin\,\theta}\;\dfrac{\partial\,X_{\varphi}}{\partial\,\varphi}}
    \end{align}}}`$** \end{align}}`$**
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