Matematika Sekolah Menengah Pertama Q.
f(x) = 5x + 3
f-¹(x) = ___
Q. f(x) = 5x + 3 f-¹(x) = ___ [tex]f(x) = 5x + 3[/tex] [tex]y = 5x + 3[/tex] [tex]y - 3 = 5x[/tex] [tex] \frac{y - 3}{5} = x[/tex] [tex]x = \frac{y - 3}{5} [/tex] [tex]f {}^{ - 1} (x) = \frac{x - 3 }{5} [/tex] Penyelesaian: f(x) nya jadi y [tex]f(x) = 5x + 3 \\ y = 5 x + 3 \\ y - 3 = 5x \\ x = \frac{y - 3}{5} \\ {f}^{ - 1} (x) = \frac{x - 3}{5} [/tex] ---------------------------------------- [tex] \boxed{ \colorbox{black}{ \sf{ \color{lightgreen}{ answered\:by\:Duone}}}} [/tex] [answer.2.content]
