# Determining Domain of Functions

1 min read

I discuss finding domain of functions with the use of graphs or graphing calculators. The domain of the last example is no solution. There is a mistake at 8:40. It should be x greater than or equal to 2 or x is less than or equal to -2.

Identifying Domain & Range from a Graph

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GGGAAaaAAAA whyyyyy??? Why scratch the board! You unlearned everything I learned

Hahaha jk but bad move

to infinity AND BEYOND

XD

Hello Professor! Thank you for this video! @10:20 what is the reason that negative infinity wasn’t included in the domain?

7 years later this video is still amazing!!!!!!!

its wired but i like it each time he corrected himself -mistakes makes him more human and I can relate to him. Great job..!!

AND BEYOND!!!

love the help on math. chalk boards r nothing but torment and evil. that sound was worse than any board sound I heard

Thanks for this video and all your other videos. You helped me get an A in College Math. Now I'm having my kids watch your videos and get more ideas on solving math! Thanks.

Q; here sir, at 5:00 could I divide by 2 first then factor the numerator

You get a dislike for scratching that chalkboard in my headphones 😛

you are very interesting teacher

I came back for some revision after two years, I know that cause I saw my comment from two years ago

Nails on a chalkboard without warning? Pure evil.

2:09 R.I.P my ears

Hello I'm having trouble with pre-calc this year and most of it has to do with not understanding how the domain works. if it is undefined will the domain always be the number followed with infinity?

Thank you!

Really simply explained and very helpful. Thank you!

So helpful. If I watch it twice I should have it down pat. Thank you. When I am in between school sessions I can help you with closed captions but I have no clue how to do it though I am a computer wiz.

at like 9:03 why do you use this bracket if the number isn't inclusive I was always taught that parentheses were used when the numbers were non inclusive and brackets were used when they were

I apologize Mr Tarrou!

thanks papa smurf, i wonder what is source of your positive energy.