1. Diketahui : f(x) = 2x+5 2. Diketahui : f(x) = [tex] \frac{2 + x}{2x - 1} [/tex] Tentukanlah Invers fungsinya ?

invers no 1
f(x) = 2x+5
y = 2x+5
-2x= -y+5
[tex]x = \frac{ - y + 5}{2} [/tex]
invers nya =
[tex]y = \frac{x + 5}{2} [/tex]
no 2 invernya rumus
-
[tex] \frac{ - dx + b}{cx - a} [/tex]
[tex] \frac{2 + x}{2x - x} = \frac{x + x}{2x - 2} = \frac{2x}{2x - 2} [/tex]
di like ya