fungsi inver f(x)=2x + 5

Diketahui :
f(x) = 2x + 5

Ditanya : fungsi invers f(x)

Jawaban :

==Misalkan==
y = 2x + 5
y - 5 = 2x
[tex] \frac{y - 5}{2} = x[/tex]


Jadi :
f'(x) = (x - 5)/2

Mapel Matematika
Bab Fungsi

F(x) = y
2x + 5 = y
2x = y - 5
x = y-5 / 2
f^-1(x) = (x - 5)/ 2