Respostas

2014-08-27T00:18:36-03:00
Boa Noite,

use a fórmula do ponto médio:

p_m=\left( \dfrac{x_1+x_2}{2}, \dfrac{y_1+y_2}{2}\right)\\\\
p_m=\left\{ \dfrac{ \dfrac{1}{2}+(-1) }{2}, \dfrac{ \dfrac{1}{3}+ \dfrac{2}{3}  }{2}\right\}\\\\
p_m=\left( \dfrac{ \dfrac{1}{2}-1 }{2}, \dfrac{ \dfrac{3}{3} }{2}\right)\\\\
p_m=\left( \dfrac{ -\dfrac{1}{2} }{~~2}, \dfrac{1}{2}\right)\\\\
p_m=\left(- \dfrac{1}{4}, \dfrac{1}{2}\right)

Tenha ótimos estudos ;D
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