求反函数 (-1)/2 x+4

解答

求反函数

\frac{- 1}{2} x + 4

- 2 x + 8

求解步骤

y = \frac{- 1}{2} x + 4

用

y

替代

x

x = \frac{- 1}{2} y + 4

求解

y, x = \frac{- 1}{2} y + 4

- 2 x + 8

d o main 36 - x^{2} + x + 3

in t erce pt s f (x) = \frac{x - 3}{( x - 4 ) ( x + 2 )}

l in e m = \frac{3}{4}, (3, - 4)

in v erse f (x) = 2 x^{3} + 3

in v erse f (x) = 3 \frac{x}{7} - 9