Id appreciate some help ^^
2 answers:
You might be interested in
Ration expressions cause excluded values wherever the denominator equals zero.
So, for any expression like
-5 is an excluded value if
For example, the simplest one would be
In fact, if you try to evaluate this function at -5, you'd have
which is undefined, and thus you can't evaluate the function, and thus -5 is an excluded value.