Question

f(x)=x/1+x e g(x)=x+1/x-1 encontrar o gof​

Answer 1

gof = g ( f (x) )

gof =

$\frac{ \frac{x}{1 + x} + 1}{ \frac{x}{1 + x} - 1 } = \frac{ \frac{x + 1 + x}{1 + x} }{ \frac{x -( 1 + x)}{1 + x} } = \frac{\frac{2x + 1}{1 + x} }{ \frac{x - 1 - x}{1 + \times } } = \frac{ \frac{2x + 1}{1 + x} }{ \frac{ - 1}{1 + x} } = \frac{2x + 1}{1 + x} \times \frac{1 + x}{ - 1} = \frac { 2x + 1}{ - 1}$