Diketahui fungsi f(x)=2x+1 dan g(x)= x+1 tentukan: a(fog)(x) b (fog)(5) c (gof)(x) d (gof)(2)

f(x)=2x+1 dan g(x)=x+1
A.(fog)(x)= f(g(x))= f(x+1)=2(x+1)+1=2x+2+1=2x+3
B.(fog)(5)=2(5)+3=10+3=13
C.(gof)(x)=g(f(x))=g(2x+1)=(2x+1)+1=2x+1+1=2x+2
D.(gof)(2)=2(2)+2=4+2=6