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M3P2
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7f8ff709
Commit
7f8ff709
authored
Aug 23, 2024
by
Claude Meny
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Update cheatsheet.fr.md
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12.temporary_ins/69.waves/20.n2/20.overview/cheatsheet.fr.md
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7f8ff709
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@@ -155,11 +155,11 @@ les "particules" sont **jointives**.
La
*perturbation*
est alors décrite par une
**fonction mathématique $`\phi`$ continue**
dans l'espace et le temps :
<br>
$
`\phi(\alpha,\beta,\gamma,t)`
$
où
$
`(\alpha,\beta,\gamma)`
$ sont des coordonnées spatiale
s.
$
`\phi
= `
$$
`\phi
(\alpha,\beta,\gamma,t)`
$
où
les coordonnées spatiales $
`(\alpha,\beta,\gamma)`
$ sont des nombres réel
s.
!!!!
*Attention :*
Les
*coordonnées spatiales*
indiquent la
*position d'équilibre*
du point matériel,
non sa position perturbée par l'onde au cours du temps.
!!!!
non sa position perturbée par l'onde au cours du temps.
#### Peut-on simplifier cette description mathématique?
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