Question

domain of f(x)=sqrt(3-x)

Answer 1

(-infinity,3) <-- bracket or parenthesis?

Answer 2

parenthesis excludes the 3 because it never actually crosses the x axis right?

Answer 3

(-infinity,3]

As 3 is included in there (and if its included it does indeed fall in the domain. sqrt(3-3) = sqrt (0) = 0.

Answer 4

@Hitaro9 is correct!!!

Answer 5

so interval notation will have a bracket for the domain of sqrt(3-x) = (-infin, 3]

Answer 6

thanks team

Answer 7

No problem. remember that sqrt of 0 is a real number, 0, so anything that gives you that is considered part of the domain.