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test-regular-2
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1cb1ed9d
Commit
1cb1ed9d
authored
Aug 31, 2020
by
Claude Meny
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Update textbook.fr.md
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00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/textbook.fr.md
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1cb1ed9d
...
@@ -151,6 +151,14 @@ faudrait mieux dire et écrire élément vectoriel d'arc?) :<br>
...
@@ -151,6 +151,14 @@ faudrait mieux dire et écrire élément vectoriel d'arc?) :<br>
[
EN
]
vector line element or veftor path element :
<br>
[
EN
]
vector line element or veftor path element :
<br>
$
`d\overrightarrow{OM}=\overrightarrow{dr}=\overrightarrow{MM'}=dl\,\overrightarrow{e_T}`
$,
<br>
$
`d\overrightarrow{OM}=\overrightarrow{dr}=\overrightarrow{MM'}=dl\,\overrightarrow{e_T}`
$,
<br>
con / avec / with
<br>
con / avec / with
<br>
[
ES
]
con $
`\overrightarrow{e_T}`
$ el vector unitario tangente a la trayectoria y dirigido
en el sentido del movimiento.
<br>
[
FR
]
avec $
`\overrightarrow{e_T}`
$ le vecteur unitaire tangent à la trajectoire
et dirigé dans le sens du mouvement.
<br>
[
EN
]
with $
`\overrightarrow{e_T}`
$ the unit vector tangent to the trajectory and
oriented in the direction of movement.
<br>
<br>
$
`\overrightarrow{e_T}=\dfrac{\overrightarrow{l}}{||\overrightarrow{l}||}.
<!--$`
\o
verrightarrow{e_T}
<!--$`
\o
verrightarrow{e_T}
=
\d
frac{
\d
frac{
\p
artial
\o
verrightarrow{OM}}{
\p
artial x}}{
\l
eft|
\l
eft|
=
\d
frac{
\d
frac{
\p
artial
\o
verrightarrow{OM}}{
\p
artial x}}{
\l
eft|
\l
eft|
\d
frac{
\p
artial
\o
verrightarrow{OM}}{
\p
artial x}
\r
ight|
\r
ight|}
`$.-->
\d
frac{
\p
artial
\o
verrightarrow{OM}}{
\p
artial x}
\r
ight|
\r
ight|}
`$.-->
...
...
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