Question

determine fog e gof de f ( x ) = x/x - 2 e g ( x ) = x + 3/ x

Answer 1

f(g(x))=(x+(3/x))/(x+(3/x))-2
f(g(x))=1-2 = -1

g(f(x))= ((x/x)-2) + (3/(x/x-2))
g(f(x))= (1-2)+(3/(1-2))
g(f(x))= -1+(3/-1) = -1-3= -4