Question

for each pair of functions, find (f o g)(x) and (g o f)(x):

Answer 1

\[f(x)=2x^3-1, g(x)= \sqrt[3]{\frac{ x+1 }{ 2 }}\]

Answer 2

\[fog(x)=f(g(x))=f(\sqrt[3]{\frac{ x+1 }{ 2 }})=(2\times \frac{ x+1 }{ 2 })-1=x+1-1=x\]
you can find gof(x) with using the way that I find fog(x).

Answer 3

ok, thank you!