Respuesta:
Explicación paso a paso:
1)
(fog)(x)=f(g(x))=(5/(x+1))+4=(5+4(x+1))/(x+1)=(5+4x+4)/(x+1)=(9+1)/(x+1)
(gof)(x)=g(f(x))=5/((x+4)+1)=5/(x+5)
2)
(fog)(x)=f(g(x))=-5
(gof)(x)=g(f(x))=5/((-5)+1)=5/(-4)=-5/4
3)
(gof)(x)=g(f(x))=8((x-3)/2)+1=4(x-3)+1=4x-11
4)
(fog)(x)=f(g(x))=4(2x-3)+5=8x-6
(gof)(x)=g(f(x))=2(4x+5)-3=8x+10-3=8x+7
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Respuesta:
Explicación paso a paso:
1)
(fog)(x)=f(g(x))=(5/(x+1))+4=(5+4(x+1))/(x+1)=(5+4x+4)/(x+1)=(9+1)/(x+1)
(gof)(x)=g(f(x))=5/((x+4)+1)=5/(x+5)
2)
(fog)(x)=f(g(x))=-5
(gof)(x)=g(f(x))=5/((-5)+1)=5/(-4)=-5/4
3)
(gof)(x)=g(f(x))=8((x-3)/2)+1=4(x-3)+1=4x-11
4)
(fog)(x)=f(g(x))=4(2x-3)+5=8x-6
(gof)(x)=g(f(x))=2(4x+5)-3=8x+10-3=8x+7