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Myriam2a
@Myriam2a
June 2021
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Je reposte les exercice 40 et 43 en espérant que ce soit plus visible
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40 ) OE=AB+CD = (xB-xA)i + (yB-yA)j + (xD-xC)i+(yD-yC)j = (xB-xA+xD-xC)i + (yB-yA+yD-yC ) j
or OE= xE i + yE j donc
(xB-xA+xD-xC)=xE
(yB-yA+yD-yC )= yE
BF= (xF-xB)i + (yF-yB)j
(xB-xA+xD-xC)= (xF-xB)
(yB-yA+yD-yC )= (yF-yB)
43) u(-3,5) , k= -2
pour chercher -2u il suffit de multiplier -3 par -2 et 5 par -2 donc -2u(6,-10)
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Salut j'aurais besoin d'aide pour les exercices 40 et 43 merci
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C'est pour demain j'y arrive pas MERCII
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Salut quelqu'un pourait m'aider merci :)
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or OE= xE i + yE j donc
(xB-xA+xD-xC)=xE
(yB-yA+yD-yC )= yE
BF= (xF-xB)i + (yF-yB)j
(xB-xA+xD-xC)= (xF-xB)
(yB-yA+yD-yC )= (yF-yB)
43) u(-3,5) , k= -2
pour chercher -2u il suffit de multiplier -3 par -2 et 5 par -2 donc -2u(6,-10)