I have watched the first three videos from this: https://www.khanacademy.org/math/alg...erval-notation

I am confused as to all the rules that govern what the domain and range are of any particular function.

So an example of a rule that I wouldn't know how to find in all situations is when the domain cannot be a specific number.

Ex.:

F(x)=2/x

The domain cannot be 0. This is just one example of a parameter of what the domain cannot be.

I guess my question is how do you know what the domain can be in all situations?

Same thing applies to Range.

So far, I have tried to think about the rules governing what constitutes as a parameter of the domain or range. I feel like there may be too many rules that govern what is a parameter of domain and range in relation to all the specific functions that are out there, so IDK how to go about knowing these rules that the parameters of the domain and range COULD fall under.

I apologize if this is in the wrong section, mods can move it if it is not in the right sesion.

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