中点 (3/7 ,-5/6),(-11/14 , 3/5)

解答

中点

(\frac{3}{7}, - \frac{5}{6}), (- \frac{11}{14}, \frac{3}{5})

(- \frac{5}{28}, - \frac{7}{60})

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}) = (\frac{3}{7}, - \frac{5}{6}), (x_{2}, y_{2}) = (- \frac{11}{14}, \frac{3}{5})

= (\frac{- \frac{11}{14} + \frac{3}{7}}{2}, \frac{\frac{3}{5} - \frac{5}{6}}{2})

整理后得

= (- \frac{5}{28}, - \frac{7}{60})

in v erse f (x) = - e^{- x + 8}

d o main f (y) = 1

in v erse f (x) = 20.25 - (x + 2.5)^{2} + 2

mi d p o in t (- 4, - 9), (- 8, 1)

in f l ec t i o n ln (5 - 3 x^{2})