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            <video:duration>293</video:duration>
            <video:category>Opérations avec des vecteurs</video:category>
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    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/e/understanding-scalar-multiplication</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/8-klas/x5903b96cf58cdc2a:vektori/x5903b96cf58cdc2a:umnozhenie-vektor-chislo/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/analyticka-geometrie/xf4420fbd93bc9fcb:vektory/xf4420fbd93bc9fcb:nasobeni-vektoru-skalrem/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="de"
                    href="https://de.khanacademy.org/math/algebra-home/alg-vectors/alg-scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/algebra-home/alg-vectors/alg-scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/algebra-home/alg-vectors/alg-scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="gu"
                    href="https://gu.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-vectors-prerequisite/in-in-class11th-physics-vectors-prerequisite-scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/vectors-precalc/scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/vectors-precalc/scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/algebra-home/alg-vectors/alg-scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/algebra-home/alg-vectors/alg-scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="ro"
                    href="https://ro.khanacademy.org/math/recapitulare-pentru-bac/x2c6df36abf3fe8b5:vectori-in-plan/x2c6df36abf3fe8b5:operatii-cu-vectori/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="vi"
                    href="https://vi.khanacademy.org/math/toan-lop-10-vietnam/xcb21687ae903a43d:vecto-trong-mat-phang-toa-do-lop-10/xcb21687ae903a43d:bieu-thuc-toa-do-cua-cac-phep-toan-vecto-lop-10/e/understanding-scalar-multiplication" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/vectors-precalc/scalar-multiplication/e/understanding-scalar-multiplication" />
        
        <lastmod>2026-02-14T09:00:40.687283673Z</lastmod>
        
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            <Attribute name="description">Il faut d&#39;abord calculer la norme  du produit d&#39;un vecteur de norme donnée par deux réels différents, et ensuite associer une possible représentation graphique à chacun des trois vecteurs dont il est question.</Attribute>
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        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/8-klas/x5903b96cf58cdc2a:vektori/x5903b96cf58cdc2a:deystvia-s-vektori/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/analyticka-geometrie/xf4420fbd93bc9fcb:vektory/xf4420fbd93bc9fcb:vector-addition-and-subtraction/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="es"
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        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="gu"
                    href="https://gu.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-vectors-prerequisite/in-in-class11th-physics-vectors-prerequisite-vector-addition-subtraction/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="hi"
                    href="https://hi.khanacademy.org/math/ncert-class-12/x7ce8ca9c5869750b:vector-algebra-ncert-new/x7ce8ca9c5869750b:addition-of-vectors/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="pt"
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        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/10ano/xe7bf8a38a4e84c6a:geometria-vetorial-no-plano/xe7bf8a38a4e84c6a:vetores/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/science/11-sinif-fizik/x6d58198d8bb19947:kuvvet-ve-hareket/x6d58198d8bb19947:untitled-2/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/9-klas/x08845d2b5649625f:vektori/x08845d2b5649625f:dodavannya-vdnmannya-vektorv/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="ur"
                    href="https://ur.khanacademy.org/math/grade-10-math-snc-aligned/x403faa8cdfdccaea:vectors-in-plane/x403faa8cdfdccaea:adding-and-subtracting-vectors/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="vi"
                    href="https://vi.khanacademy.org/math/toan-lop-10-vietnam/xcb21687ae903a43d:vecto-trong-mat-phang-toa-do-lop-10/xcb21687ae903a43d:bieu-thuc-toa-do-cua-cac-phep-toan-vecto-lop-10/v/adding-and-subtracting-vectors" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-and-subtracting-vectors" />
        
        <lastmod>2023-03-07T14:33:55.133328914Z</lastmod>
        
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            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/EbcX9fzuon8.mp4/EbcX9fzuon8.mp4</video:player_loc>
            <video:duration>462</video:duration>
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    <url>
        <loc>https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/v/adding-vectors</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/8-klas/x5903b96cf58cdc2a:vektori/x5903b96cf58cdc2a:deystvia-s-vektori/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/analyticka-geometrie/xf4420fbd93bc9fcb:vektory/xf4420fbd93bc9fcb:vector-addition-and-subtraction/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/linear-algebra/vectors-and-spaces/vectors/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/linear-algebra/vectors-and-spaces/vectors/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="gu"
                    href="https://gu.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-vectors-prerequisite/in-in-class11th-physics-vectors-prerequisite-vector-addition-subtraction/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/linear-algebra/vectors-and-spaces/vectors/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/linear-algebra/vectors-and-spaces/vectors/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/linear-algebra/vectors-and-spaces/vectors/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="pt-pt"
                    href="https://pt-pt.khanacademy.org/math/10ano/xe7bf8a38a4e84c6a:geometria-vetorial-no-plano/xe7bf8a38a4e84c6a:vetores/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/science/11-sinif-fizik/x6d58198d8bb19947:kuvvet-ve-hareket/x6d58198d8bb19947:untitled-2/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="vi"
                    href="https://vi.khanacademy.org/math/toan-lop-10-vietnam/xcb21687ae903a43d:vecto-trong-mat-phang-toa-do-lop-10/xcb21687ae903a43d:bieu-thuc-toa-do-cua-cac-phep-toan-vecto-lop-10/v/adding-vectors" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/vectors-precalc/vector-addition-subtraction/v/adding-vectors" />
        
        <lastmod>2021-03-25T01:39:36Z</lastmod>
        
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            <Attribute name="title">Construire le vecteur somme - exercice</Attribute>
            <Attribute name="description">Pour déterminer quel est le vecteur somme de deux vecteurs donnés dans un repère du plan, on peut calculer ses composantes qui sont les sommes des composantes des vecteurs donnés. On peut aussi faire une construction géométrique de ce vecteur somme.</Attribute>
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            <video:title>Construire le vecteur somme - exercice</video:title>
            <video:description>Pour déterminer quel est le vecteur somme de deux vecteurs donnés dans un repère du plan, on peut calculer ses composantes qui sont les sommes des composantes des vecteurs donnés. On peut aussi faire une construction géométrique de ce vecteur somme.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/MZbroORk4Hw.mp4/MZbroORk4Hw.mp4</video:player_loc>
            <video:duration>432</video:duration>
            <video:category>Opérations avec des vecteurs</video:category>
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    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/v/mag-vec-sums</loc>
        
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                    href="https://bg.khanacademy.org/math/8-klas/x5903b96cf58cdc2a:vektori/x5903b96cf58cdc2a:deystvia-s-vektori/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="cs"
                    href="https://cs.khanacademy.org/math/analyticka-geometrie/xf4420fbd93bc9fcb:vektory/xf4420fbd93bc9fcb:adding-vectors-in-magnitude-and-direction-form/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="en"
                    href="https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="es"
                    href="https://es.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="fr"
                    href="https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="gu"
                    href="https://gu.khanacademy.org/science/in-in-class11th-physics/in-in-class11th-physics-vectors-prerequisite/in-in-class11th-physics-vectors-prerequisite-adding-vectors-in-magnitude-and-direction-form/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="hy"
                    href="https://hy.khanacademy.org/math/precalculus/vectors-precalc/adding-vectors-in-magnitude-and-direction-form/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="ka"
                    href="https://ka.khanacademy.org/math/precalculus/vectors-precalc/adding-vectors-in-magnitude-and-direction-form/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="ko"
                    href="https://ko.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="nl"
                    href="https://nl.khanacademy.org/math/2e-graad-so-wiskunde-be/x4eaf1aaf5ffd3a26:vectoren/x4eaf1aaf5ffd3a26:vectoren-optellen-aan-de-hand-van-grootte-richting-en-zin/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="pl"
                    href="https://pl.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="pt"
                    href="https://pt.khanacademy.org/math/precalculus/x9e81a4f98389efdf:vectors/x9e81a4f98389efdf:vector-add-sub/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="tr"
                    href="https://tr.khanacademy.org/science/11-sinif-fizik/x6d58198d8bb19947:kuvvet-ve-hareket/x6d58198d8bb19947:untitled-2/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="uk"
                    href="https://uk.khanacademy.org/math/9-klas/x08845d2b5649625f:vektori/x08845d2b5649625f:dodavannya-vdnmannya-vektorv/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="uz"
                    href="https://uz.khanacademy.org/math/precalculus/vectors-precalc/adding-vectors-in-magnitude-and-direction-form/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="vi"
                    href="https://vi.khanacademy.org/math/toan-lop-10-vietnam/xcb21687ae903a43d:vecto-lop-10/xcb21687ae903a43d:tong-va-hieu-cua-hai-vecto-lop-10/v/mag-vec-sums" />
        
        <xhtml:link rel="alternate" hreflang="zh-hans"
                    href="https://zh.khanacademy.org/math/precalculus/vectors-precalc/adding-vectors-in-magnitude-and-direction-form/v/mag-vec-sums" />
        
        <lastmod>2021-04-13T16:24:51Z</lastmod>
        
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            <video:description>Des propriétés de la norme du vecteur somme de deux ou plusieurs vecteurs.</video:description>
            <video:player_loc>https://cdn.kastatic.org/ka-youtube-converted/wjHg8v3HNcA.mp4/wjHg8v3HNcA.mp4</video:player_loc>
            <video:duration>330</video:duration>
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    </url>
    
    <url>
        <loc>https://fr.khanacademy.org/math/be-4eme-secondaire2/x213a6fc6f6c9e122:geometrie-analytique-les-vecteurs/x213a6fc6f6c9e122:operations-avec-des-vecteurs/e/adding_vectors</loc>
        
        <xhtml:link rel="alternate" hreflang="bg"
                    href="https://bg.khanacademy.org/math/8-klas/x5903b96cf58cdc2a:vektori/x5903b96cf58cdc2a:deystvia-s-vektori/e/adding_vectors" />
        
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