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Calculati distanta AB stiind ca A(3,5) si B(-2,4).
Calculati si mijlocul dreptei AB


Răspuns :

[tex]d(A(x_1,y_1),B(x_2,y_2))=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}=\\ =\sqrt{(-2-3)^2+(4-5)^2}=\sqrt{25+1}\sqrt{26}\\ x_M=\frac{x_1+x_2}{2}=\frac{1}{2}\\ y_M=\frac{y_1+y_2}{2}=\frac{9}{2}\\ M(\frac{1}{2},\frac{9}{2})[/tex]