Question

plisss tolong kk pakai jalan​

Answer 1

Jawaban:

4

Penjelasan dengan langkah-langkah:

Step 1 - Mencari [tex] \footnotesize \bf {f}^{ - 1}(x)[/tex]

[tex]\begin{aligned}f(x)& = \frac{3x - 2}{x + 1} \\ y& = \frac{3x - 2}{x + 1} \\ y(x + 1)& = 3x - 2\\ yx + y& = 3x - 2\\yx - 3x& = - y - 2\\x(y - 3)& = - y - 2\\ x& = \frac{- y - 2}{y - 3}\\ {f}^{ - 1}(x) & = \frac{- x - 2}{x - 3} \end{aligned} [/tex]

Step 2 - Mencari [tex] \footnotesize \bf {f}^{ - 1}(2)[/tex]

[tex] \begin{aligned}{f}^{ - 1}(x) & = \frac{- x - 2}{x - 3} \\ {f}^{ - 1}(2) & = \frac{- 2- 2}{2- 3} \\ {f}^{ - 1}(2) & = \frac{- 4}{-1} \\{f}^{ - 1}(2) & = \bf 4 \end{aligned}[/tex]