中点 (-3,-12),(11,-4)

解答

中点

(- 3, - 12), (11, - 4)

(4, - 8)

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, - 12), (x_{2}, y_{2}) = (11, - 4)

= (\frac{11 - 3}{2}, \frac{- 4 - 12}{2})

整理后得

= (4, - 8)

in v erse y = x - 3

cr i t i c a l f (x) = 2 sin^{2} (24 x) + 3

r an g e \frac{2 x ^{2} + 8 x - 24}{x ^{2} + x - 12}

cr i t i c a l f (x) = x^{4} - 50 x^{2}

d o main f (x) = \frac{3}{2 x - 1}