Question

Hi, if f:[3,infinity) R where f=f(x) and g(- infinity,3] R where g=g(x), then the domain of f(x)+g(x) would be?

Answer 1

{3}

Answer 2

Is it alright if you show me the working out? :)

Answer 3

that would be (-inf,3] intersect [3,inf)

Answer 4

Thank you