How do I find the limits of rational functions?
"How do I find the limits of rational functions?"
There are several approaches to finding a limit (you will use in Precalculus)
You can first try direct substitution.
If that doesn't work, try the following methods:
- Numerical - which means creating a table, using values that are
close to the
- Graphical - which allows you to see the limit approaching an
- Algebraic - that is, by manipulation using algebra skills such as factoring, rationalizing the denominator; or rationalizing the numerator, etc.
You must read the instructions carefully to see which method they ask you to use.
- I often use the algebraic method, because it's faster (in my opinion), but the method really also depends on the question.
I hope this helps.