diketahui pemetaan f:x= x-1/x+2. range dalam bentuk himpunan pasangan berurutan dengan domain f(-1,1/2,0,1)

Materi Fungsi
[tex] f(x) = \frac{x-1}{x+2} [/tex] [tex]f(-1) = \frac{-1-1}{-1+2} = -2 [/tex] [tex] f(\frac{1}{2}) = \frac{\frac{1}{2}-1}{\frac{1}{2}+2} = \frac{-\frac{1}{2}{\frac{5}{2}} = -\frac{1}{5} [/tex] [tex] f(0) = \frac{0-1}{0+2} = -\frac{1}{2} \\ f(1) = \frac{1-1}{x+2} = 0 [/tex]
f(-1/2) = (1/2 - 1) / (1/2 + 2) = (-1/2)/(5/2) = -1/5
Jadi, rangenya adalah {(-1, -2), (1/2, -1/5), (0, -1/2), (1, 0)}