maka nilai dari f-¹(x)=...?
Penyelesaian:
Fungsi Invers,
[tex]f (x) = \frac{x + 1}{x - 2} [/tex]
[tex]y = \frac{x + 1}{x - 2} [/tex]
[tex]y(x - 2) = x + 1[/tex]
[tex]xy - 2y = x + 1[/tex]
[tex]xy - x = 1 + 2y[/tex]
[tex]x(y - 1) = 1 + 2y[/tex]
[tex]x = \frac{1 + 2y}{y - 1} [/tex]
[tex]f {}^{ - 1} (x) = \frac{1 + 2x}{x - 1} [/tex]
Semoga Membantu CMIW^_^
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