Thread: What is the domain & range of function?

f(x)=x^2+4x+9

Domain:
Range:

Thank you

Important question: Do you know what the domain and range of a function are in general?

edit: I see you are still online looking at this thread. I can help you, I just wanted a simple answer first.

Yes I do

Domain:any value of x that this function won't work on?

Range: minimum y value? Then anything less
than that is out of this function's range.

But I don't know how to apply this in brackets with infinities???