中点 (8,-3),(-5,-9)

解答

中点

(8, - 3), (- 5, - 9)

(\frac{3}{2}, - 6)

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}) = (8, - 3), (x_{2}, y_{2}) = (- 5, - 9)

= (\frac{- 5 + 8}{2}, \frac{- 9 - 3}{2})

整理后得

= (\frac{3}{2}, - 6)

y = x^{2}, (3, 9)

6 x

8 x - 6 y = 1

f (x) = sec (x)

9 x