中点 (2.25,2.25),(-1.5,5.79)

解答

中点

(2.25, 2.25), (- 1.5, 5.79)

(0.375, 4.02)

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}) = (2.25, 2.25), (x_{2}, y_{2}) = (- 1.5, 5.79)

= (\frac{- 1.5 + 2.25}{2}, \frac{5.79 + 2.25}{2})

整理后得

= (0.375, 4.02)

in v erse f (x) = \frac{3 + 4 x}{1 - 5 x}

f (x) = \frac{( 4 x ^{2} - x )}{( x ^{2} - 1 )}

p a r i t y csc^{2} (x) d x

s im pl i f y (- 6.8) (- 10.2)

sy mm e t ry y = - \frac{1}{4 x} x^{2} + 9 x - 8