From 048533f1f29e9827635d6a68ac01e8dcc77d9cec Mon Sep 17 00:00:00 2001 From: Claude Meny Date: Mon, 11 Jan 2021 14:48:14 +0100 Subject: [PATCH] Update textbook.es.md --- .../20.reference-frames-coordinate-systems/textbook.es.md | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/20.reference-frames-coordinate-systems/textbook.es.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/20.reference-frames-coordinate-systems/textbook.es.md index 16fcf8821..810a65dcc 100644 --- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/20.reference-frames-coordinate-systems/textbook.es.md +++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/20.reference-frames-coordinate-systems/textbook.es.md @@ -1393,7 +1393,8 @@ $`(\overrightarrow{e_{\rho}}, \overrightarrow{e_{\phi}}, \overrightarrow{e_z})`$ --------------------------------- -* *CS620* : **N3 ($`\rightarrow`$ N4)**
+* *CS620* : **N3 ($`\rightarrow`$ N4)** + Méthode 2 pour le calcul de $`\dfrac{d e_r}{dt}`$ , $`\dfrac{d e_{\theta}}{dt}`$ , $`\dfrac{d e_{\varphi}}{dt}`$ @@ -1520,7 +1521,8 @@ $`=\dfrac{d\theta}{dt}\cdot\overrightarrow{0}\,-\,\dfrac{d\varphi}{dt}\cdot\over ------------------ -* *CS630* : +* *CS630* + $`\overrightarrow{v}(t)=\dfrac{d\overrightarrow{OM}}{dt}=\dfrac{d\overrightarrow{OM}(t)}{dt}=\dfrac{d}{dt}\left[\,r(t)\cdot\overrightarrow{e_r}(t)\,\right]`$$`=\dfrac{dr(t)}{dt}\cdot\overrightarrow{e_r(t)}\;+\;r(t)\cdot\dfrac{d\overrightarrow{e_r}(t)}{dt}`$ $`=\dfrac{dr}{dt}\cdot\overrightarrow{e_r}\;+\;r\cdot\dfrac{d\overrightarrow{e_r}}{dt}`$