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F(x)=3x+4
g(x)=2-x
=-x+2
f⁻¹=3x+4
y=3x+4
y-4=3x
(y-4)/3=x
g⁻¹(x)=-x+2
y=-x+2
y-2=-x
(y-2)/-1=x
-(y-2)=x
-y+2=x
gof⁻¹(x)=f⁻¹o g⁻¹
=f⁻¹(g⁻¹(x))
=((-x+2)-4)/3
=((-x-2)/3
=1/3.(-x-2)
=1/3.-1(x+2)
=-1/3(x+2)
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Pilihan D.
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