Question

Determine as expressões de fog e gof, onde:
f(x) = (x-3)e g(x) = 2x + 3

Answer 1

fog e gof, onde:
f(x) = (x-3)e g(x) = 2x + 3

fog=f(g(x))= f(2x + 3)=2x + 3 - 3 = 2x
 
gof = g(f(x))= g(x-3)=2(x-3) + 3 = 2x - 6 + 3 = 2x - 3