Learn to write the domain in interval notation of rational function

👉 Learn how to find the domain of rational functions. Recall that the domain of a function is the set of possible input values (x-values) of the function. For a rational function, the denominator cannot be zero. Thus, to find the domain of a rational function, we first find the values of x, for which the denominator is zero. This is done by setting up the denominator(s) equal to 0 and solve for the variable. The required domain of the function is the set of all real numbers except those values of x for which the denominator is zero.

Organized Videos:
✅ How to find the domain of a function
✅Domain of a function with square root | Medium
✅Domain of a function with square root | Quadratic
✅Domain of a function with square root | Easy
✅Domain of a function with square root | Hard
✅Domain of a function with a fraction | Hard
✅Domain of a function with a fraction | Easy
✅Domain of a function with a fraction | Quadratic
✅Domain of a function with a fraction | Medium
✅Domain of a function with a fraction | Linear
✅Domain of a function with a square root in the denominator
✅Domain of a function with a square root in the numerator
✅Domain of a function with a square root in the numerator and denominator

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[ashaboone]

I'm in Pre-Calc and I could never understand interval notation until seeing this video and it all made so much sense!! Thank you Brian, you'll be mentioned in my graduation speech lol

[rosegabc]

Thank you Brian, My son has autism and your teaching method makes it very easy for him to understand the concepts

[autumnwoodard]

Wow, College Algebra student here... You don't even know how much you just helped me. Thank you!

[OHHnoYOUdidntMAN]

Thank you very much Brian!! The last bit at the end of the video (how to write proper interval notation) was *exactly* what I needed help on!

[Boone]

Since my school is switching to online this is very helpful!

[lisaliners]

Simple and to the point. THANK YOU!!!! Wish you were my professor!

[bigbossbezos]

Thank you so much! Writing in interval notation was something I could not wrap my head around. The last part with the graph helped so much!

[nopasses]

I understand interval notation and so far have done well in my quantitative analysis however now that we are deciding functions I am stumped. One of my questions is like the question I'm posting about except there is a multiplier outside of the binomials. So, 5(x-1)(x+1) like so. I've put in the answers I came up with to no avail so I'm asking you to do a video on this specific thing since I do not see one. I even multiplied the term into general form which I don't think is the right way. thx you really are great at explaining these principles, I've been watching you for some time now and you are part of the reason I have straight A's in my math. I dropped out in ninth grade and I'm two semesters into college. What you do matters so much.

[kathrynpelser]

explained this better than my college professor thank u