jika (fog) (x) = (7x + 3)/(5x -9) dan g(x) = 2x -4 nilai f(2) ?
Matematika
Burhanudinbani
Pertanyaan
jika (fog) (x) = (7x + 3)/(5x -9) dan g(x) = 2x -4 nilai f(2) ?
1 Jawaban
-
1. Jawaban FMAK
(fog) (x) = (7x + 3)/(5x -9)
f(g(x))= (7x + 3)/(5x -9)
f(2x-4)= (7(2x-4)+3)/(5(2x-4)-9)
f(2x-4)= (14x-28+3)/(10x-20-9)
f(2x-4)= (14x-25)/(10x-29)
f(x)= (14x-25)/(10x-29)
f(2)= (14(2)-25)/(10(2)-29)
f(2)= 3/-9
f(2)= -1/3