Ответ: a) AE=(2;2) ;ED=(-2;4) ; b) AE+ED=(0;6); AE-ED =(4;2)
Объяснение: a) BE :EC =1:2 => EC=4 => BE =2
E(5;-4) => B(5;-6) => A(3;-6)
AE=(Xe-Xa;Ye-Ya)= (5-3; -4-(-6)) = (2;2) AE=(2;2)
ED= (Xd-Xe;Yd-Ye)=(3-5); 0-(-4)= (-2;4) ED=(-2;4)
b) AE+ED =(Xae+Xed;Yae+Yed) = (2+(-2) ; 2+4) =(0;6) AE+ED=(0;6)
AE-ED =(Xae-Xed;Yae-Yed) =(2-(-2); 2-4) =(4;-2) AE-ED =(4;2)
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Ответ: a) AE=(2;2) ;ED=(-2;4) ; b) AE+ED=(0;6); AE-ED =(4;2)
Объяснение: a) BE :EC =1:2 => EC=4 => BE =2
E(5;-4) => B(5;-6) => A(3;-6)
AE=(Xe-Xa;Ye-Ya)= (5-3; -4-(-6)) = (2;2) AE=(2;2)
ED= (Xd-Xe;Yd-Ye)=(3-5); 0-(-4)= (-2;4) ED=(-2;4)
b) AE+ED =(Xae+Xed;Yae+Yed) = (2+(-2) ; 2+4) =(0;6) AE+ED=(0;6)
AE-ED =(Xae-Xed;Yae-Yed) =(2-(-2); 2-4) =(4;-2) AE-ED =(4;2)