eduroam-prg-og-1-29-184.net.univ-paris-diderot.fr 2026-3-23:11:26:56

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oskar
2026-03-23 11:26:57 +01:00
parent 0ea2a4f7c9
commit c0cdc34e17
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"repelStrength": 5.263671875, "repelStrength": 5.263671875,
"linkStrength": 1, "linkStrength": 1,
"linkDistance": 30, "linkDistance": 30,
"scale": 0.0989427787267463, "scale": 0.13320413080202398,
"close": true "close": true
} }
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"prevs" "prevs"
], ],
"lock_view": false, "lock_view": false,
"lock_path": "anneau.md" "lock_path": "sources/Alan Perlis.md"
}, },
"tree": { "tree": {
"collapse": false, "collapse": false,
@@ -651,7 +651,7 @@
"alias": false "alias": false
}, },
"lock_view": false, "lock_view": false,
"lock_path": "anneau.md" "lock_path": "sources/Alan Perlis.md"
} }
}, },
"codeblocks": { "codeblocks": {
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> $a^{n} - b^{n} = (a-b) \sum\limits_{k=0}^{n-1}a^{k}b^{n-1-k}$ > $a^{n} - b^{n} = (a-b) \sum\limits_{k=0}^{n-1}a^{k}b^{n-1-k}$
> > [!démonstration]- Démonstration > > [!démonstration]- Démonstration
> > Réécrivons le terme de droite de manière développée : > > Réécrivons le terme de droite de manière développée :
> > $\begin{align} (a-b)\sum\limits_{k=0}^{n-1}a^{k}b^{n-1-k} &= (a-b)(a^{0}b^{n-1} + a^{1}b^{n-2} + \cdots + a^{n-2}b^{1}+a^{n-1}b^{0}) \\&= \bcancel{\color{darkred}a^{1}b^{n-1}} + \bcancel{\color{chartreuse}a^{2}b^{n-2}}+\bcancel{\color{deepskyblue} a^{3}b^{n-3}} + \cdots + \bcancel{\color{orange} a^{n-1}b^{1}} +a^{n}b^{0} \\ &\quad \,- a^{0}b^{n}-a^{1}b^{n-1}- a^{2}b^{n-2}-\cdots -a^{n-2}b^{2}-a^{n-1}b^{1} \end{align}$ > > $\begin{align} (a-b)\sum\limits_{k=0}^{n-1}a^{k}b^{n-1-k} &= (a-b)(a^{0}b^{n-1} + a^{1}b^{n-2} + \cdots + a^{n-2}b^{1}+a^{n-1}b^{0}) \\&= \bcancel{\color{deepskyblue}a^{1}b^{n-1}} + \bcancel{\color{chartreuse}a^{2}b^{n-2}}+\bcancel{\color{#ffaaff} a^{3}b^{n-3}} + \cdots + \bcancel{\color{orange} a^{n-1}b^{1}} +a^{n}b^{0} \\ &\quad \,- a^{0}b^{n} - \bcancel{\color{deepskyblue}a^{1}b^{n-1}} \bcancel{\color{chartreuse} - a^{2}b^{n-2}}- \cdots \bcancel{\color{#aaaaff}-a^{n-2}b^{2}} \bcancel{\color{orange}-a^{n-1}b^{1}} \\&= a^{n}b^{0} - a^{0}b^{n} \\&= \boxed{a^{n} - b^{n}} \end{align}$
> > > >
# Exemples # Exemples
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aliases: aliases:
up: up:
- "[[morphisme]]" - "[[morphisme]]"
- "[[anneau]]"
tags: tags:
- s/maths/algèbre - s/maths/algèbre
--- ---
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```breadcrumbs ```breadcrumbs
title: "Sous-notes" title: "Sous-notes"
type: tree type: tree
collapse: false collapse: true
show-attributes: [field] show-attributes: [field]
field-groups: [downs] field-groups: [downs]
depth: [0, 1] depth: [0, 1]