Hello,

Do you have examples ?

In general, how to find the domain of a function ?

- not defined at points which annulate a denominator

- not defined at points which make a number under a square root negative

.. I don't see any other for the moment at your level...

In order to find the range, the best to do is to graph the function...

It'd be easier to show you methods in examples since these methods highly depend on the function...