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Daca A(3,2), B(3,−2) si BA=xi +yj⃗, atunci y=...


Răspuns :

Răspuns:

BA=xi+yj

BA=(x2-x1) i+(y2-y1) j=>x=x2-x1=0

y=y2-y1=-4

Asadar,

BA=0*i-4j

BA(0, - 4)