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Update textbook.en.md

keep-around/d8aaea8293435ded3d83b5067258020ef312cb6a
Claude Meny 6 years ago
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      10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md

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10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md

@ -197,7 +197,6 @@ FR : opérateur nabla <br>
EN : nabla operator
$`\overrightarrow{grad} f = \nabla f`$, $`\overrightarrow{\nabla}f`$ better, no? <br>
ES : gradiente <br>
FR : gradient <br>
@ -244,6 +243,13 @@ $`\Delta\;\overrightarrow{U} = \left |
\end{array}
\right.`$
$`\Delta\;\overrightarrow{U} = \left |
$\begin{pmatrix}
\dfrac{\partial^2\;U_x}{\partial x^2}+\dfrac{\partial^2\;U_x}{\partial y^2}+\dfrac{\partial^2\;U_x}{\partial z^2} \\[4mm]
\dfrac{\partial^2\;U_y}{\partial x^2}+\dfrac{\partial^2\;U_y}{\partial y^2}+\dfrac{\partial^2\;U_y}{\partial z^2} \\[4mm]
\dfrac{\partial^2\;U_z}{\partial x^2}+\dfrac{\partial^2\;U_z}{\partial y^2}+\dfrac{\partial^2\;U_z}{\partial z^2} \\[4mm]
\end{pmatrix}$
\right.`$
ES : escalar = número real o complexo + unidad de medida? <br>
FR : scalaire = nombre réel ou complexe + unité de mesure <br>

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