Originally Posted by

**Tweety** The domain of a function f is the largest subset of **R **at which f can be defined. write the domain of the following function in interval notation i.e using

[,(,),] , U n , \

$\displaystyle f(x) = \sqrt{(x+2)} $

$\displaystyle f(x) = tan \pi x $

I know for the first one, in order for it to be defined in the set of reals, it cannot be negative, so i have to exclude all numbers that are going to make that function negative, but i dont know how to write this in 'interval notation'

and no idea how to go about the second one, any help appreciated