Domain of a function


Figuring out the domain of a function

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25 Comments

  1. NorwegianNightmare88 says:

    how do you write so good with a mouse on the computer?!?!?!?!?

  2. Mejiera12 says:

    8bit nice one catching that

  3. limon914 says:

    Very helpful, thanks!

  4. Archer6633 says:

    If it only was recorded by a camera.. you would rock..!

  5. mack520 says:

    hey mon- where do we send money? Paypal?

  6. VFCfuturelove1 says:

    crap I CANT FIND WUT I WANT!!.. so my homework goes a little like this ..Find the range(dependent),R, of every funcion given the domain (independent),D.then here’s #9-f(x)=x(cubed)+3 then to the side D={-3,0,3}..HELP?!?!=[..don't get it..i have 2 turn this in 2morrow..will make sure 2 pay attention in class latr..bt for now HELP PLEASE!!=]

  7. jokersnkings says:

    hey i have a problem that i reely dont get…..f{x} = kx/3x+5, x does not equal negative 5/3 and f{f{x}} =x satifies f{x} for all real vaulues of x expect negative 5/3 what is the value of k

  8. sblackstone says:

    What I would like to know is why this is the first result when you search for ‘funions’ on youtube.

  9. forensicsbound says:

    hey thanks….just outta curiosity, do you have a vid like this on finding range or can you direct me 2 a video on this. Thanks!

  10. chevelledude888 says:

    this is scary if u read this this far u will die in 10 days if u dont send to any 15 videos in 2 hours SORRY x .

  11. exquibble says:

    in the last example 1/2 is not an even or odd number but it is a real number. Your domain in this example is wrong.

  12. 8bit2008 says:

    Forgive me if I’m wrong, but on that last question, isn’t the domain the set of all INTEGERS such that x is not equal to 1?

  13. dotageek11 says:

    can you find domain and range of y=2x^2-x? thanks a lot.

  14. majorkeybaree says:

    absolute value?

  15. abedbae says:

    The last problem was tricky! almost got me :)

  16. abedbae says:

    thanks!

  17. buzwazfuz says:

    thank you, you always get me through my math and physics homework. thx agian

  18. jensennn93 says:

    thank you sooooo much!

  19. sarafann says:

    ty, saved my grade :)

  20. RoseDelion says:

    I can’t stand my math teacher, he didn’t teach us this, he just gives us paper, does 1 example. And expects us to get an A+
    I need help on how to graph dilations/translations
    Thanks your very helpful =)

  21. DCaple0013 says:

    u have a lot of time to be doing this. thank you tho for real i got this take home quiz and ive been falling behind. good man u r. peace.

  22. macardent says:

    YOU ARE AWESOME! Now I can hope I get perfect in tomorrows test!

  23. khanacademy says:

    for y=x^2, y is a function of x or y=f(x)=x^2 because if you input any x into the f(x)=x^2, you get a unique value. For x=y^2, x is a function of y for the same reason (x=f(y)=y^2) but y is not a function of x. For x=y^2, if x=4, then y could be +2 or -2 so you don’t get a unique y.

  24. levimariah says:

    Sal; can you help me understand how to determine if a relation is a function or not, like y=x^2 vs. x=y^2 one is a function and one is not,i’m haveing a hard time deciphering the info. also; could f(x) be considered y when x is in the relation? thanks, Tim

  25. payasitopimpim2002 says:

    instructive useful …..awesome…thanks my friend…………

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