中点 (3.5,2.2),(1.5,-4.8)

解答

中点

(3.5, 2.2), (1.5, - 4.8)

(2.5, - 1.3)

求解步骤

(x_{1}, y_{1}), (x_{2}, y_{2})

的中点:

(\frac{x _{2} + x _{1}}{2}, \frac{y _{2} + y _{1}}{2})

(x_{1}, y_{1}) = (3.5, 2.2), (x_{2}, y_{2}) = (1.5, - 4.8)

= (\frac{1.5 + 3.5}{2}, \frac{- 4.8 + 2.2}{2})

整理后得

= (2.5, - 1.3)