berapa ya hasilnya???

Mapel : Matematika
Materi : Fungsi - Invers Fungsi

[tex]f(x)=ax+b \to f^{-1}= \frac{x-b}{a} \\ \\ f(x)= \frac{1-2x}{3}= \frac{1}{3}-\frac{2}{3}x \to a=-\frac{2}{3};\ b=\frac{1}{3} \\ \\f^{-1}= \frac{x-\frac{1}{3}}{-\frac{2}{3}}\\ \\ f^{-1}=\frac{3(x-\frac{1}{3})}{-2}\\ \\ f^{-1}=-\frac{3x+1}{2}[/tex]

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