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Commit fb3cbbf3 authored by Claude Meny's avatar Claude Meny
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Update cheatsheet.fr.md

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    12.temporary_ins/08.grad-div-rot/70.combinaisons-of-operators/20.overview/cheatsheet.fr.md
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    ...@@ -139,8 +139,20 @@ $`\quad - ...@@ -139,8 +139,20 @@ $`\quad -
    $`\quad = \left(\begin{array}{l} $`\quad = \left(\begin{array}{l}
    \dfrac{\partial^2 U_x}{\partial x^2}+\dfrac{\partial^2 U_y}{\partial x\, \partial y}+\dfrac{\partial^2 U_z}{\partial x \,\partial z}\\ \dfrac{\partial^2 U_x}{\partial x^2}+\dfrac{\partial^2 U_y}{\partial x\, \partial y}+\dfrac{\partial^2 U_z}{\partial x \,\partial z}\\
    \quad - \dfrac{\partial^2 E_y}{\partial y\,\partial x}
    +\dfrac{\partial^2 E_x}{\partial y^2}
    +\dfrac{\partial^2 E_x}{\partial z^2}
    -\dfrac{\partial^2 E_z}{\partial z\,\partial x} \\
    \dfrac{\partial^2 U_x}{\partial y \,\partial x}+\dfrac{\partial^2 U_y}{\partial y^2}+\dfrac{\partial^2 U_z}{\partial y \,\partial z}\\ \dfrac{\partial^2 U_x}{\partial y \,\partial x}+\dfrac{\partial^2 U_y}{\partial y^2}+\dfrac{\partial^2 U_z}{\partial y \,\partial z}\\
    \quad - \dfrac{\partial^2 E_z}{\partial z\,\partial y}
    +\dfrac{\partial^2 E_y}{\partial z^2}
    +\dfrac{\partial^2 E_y}{\partial x^2}
    -\dfrac{\partial^2 E_x}{\partial x\,\partial y} \\
    \dfrac{\partial^2 U_x}{\partial z \,\partial x}+\dfrac{\partial^2 U_y}{\partial z \,\partial y}+\dfrac{\partial^2 U_z}{\partial z^2}\\ \dfrac{\partial^2 U_x}{\partial z \,\partial x}+\dfrac{\partial^2 U_y}{\partial z \,\partial y}+\dfrac{\partial^2 U_z}{\partial z^2}\\
    \quad - \dfrac{\partial^2 E_y}{\partial x\,\partial z}
    +\dfrac{\partial^2 E_x}{\partial x^2}
    +\dfrac{\partial^2 E_z}{\partial y^2}
    -\dfrac{\partial^2 E_z}{\partial y\,\partial z} \\
    \end{array}\right)`$ \end{array}\right)`$
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