Tolong bantu jawab yaa.. Diketagui fungsi f =R-›R dan g=R-›R yang dinyatakan f(x) = 2x-1 dan g(x) =x/x+2 ; x≠-2. Invers (fog) (x) adalah? a. (fog)^-1 (x) =2x+2/
Matematika
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Pertanyaan
Tolong bantu jawab yaa..
Diketagui fungsi f =R-›R dan g=R-›R yang dinyatakan f(x) = 2x-1 dan g(x) =x/x+2 ; x≠-2. Invers (fog) (x) adalah?
a. (fog)^-1 (x) =2x+2/x+1;x≠-1
b. (fog)^-1 (x) =2x-2/x+1;x≠-1
c. (fog)^-1 (x) =2x-2/x-1;x≠1
d. (fog)^-1 (x) =2x-2/1-x;x≠1
e. (fog)^-1 (x) =2x-2/1-x;x≠1
Diketagui fungsi f =R-›R dan g=R-›R yang dinyatakan f(x) = 2x-1 dan g(x) =x/x+2 ; x≠-2. Invers (fog) (x) adalah?
a. (fog)^-1 (x) =2x+2/x+1;x≠-1
b. (fog)^-1 (x) =2x-2/x+1;x≠-1
c. (fog)^-1 (x) =2x-2/x-1;x≠1
d. (fog)^-1 (x) =2x-2/1-x;x≠1
e. (fog)^-1 (x) =2x-2/1-x;x≠1
1 Jawaban
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1. Jawaban sisca141
Fog=2(x/x+2)-1 = (X-2)/(x+2)
Fog-1 = (-2x-2)/(x-1)