Understanding Interval Notation

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  • Опубликовано: 20 янв 2015
  • This video is to help with understanding how to write and say domain and range in interval notation.

Комментарии • 62

  • @user-tm27651
    @user-tm27651 6 лет назад +3

    Taking college algebra online over the summer and the examples they give on it are confusing. This helped out so so much. Thank you for all you do!

  • @lbrame7230
    @lbrame7230 7 лет назад +28

    This is how Math should be taught!! Amazing video! Thank you!!

    • @marontomakha4988
      @marontomakha4988 6 лет назад

      Totally agree

    • @andyvizcaino4131
      @andyvizcaino4131 5 лет назад

      Agree..i didn’t understand nothing till I saw this video

    • @chriscao9828
      @chriscao9828 5 лет назад +1

      Maths is made easy with this kind of teacher in class 👌👌

    • @somerandomdude5218
      @somerandomdude5218 5 лет назад +1

      I didn’t understand any of this until I watched this lol

  • @blossom5
    @blossom5 4 года назад +1

    THIS IS SO HELPFUL!!! THANK YOU FOR CLEARLY EXPLAINING THIS!!! THIS IS A LIFE SAVER!!!

  • @vanessaguerrero5835
    @vanessaguerrero5835 5 лет назад +2

    THANK YOU SO MUCH! very good explanation. i have a test in 1hr & 30min & i finally understand this part.

  • @bradleysmith905
    @bradleysmith905 6 лет назад +9

    I might actually pass my Algebra 2 test thanks to you. :)

    • @jasonstarrising
      @jasonstarrising 4 года назад

      Bradley Smith
      ...this is Algebra 1

    • @maryrobinson317
      @maryrobinson317  4 года назад +1

      @@jasonstarrising I made this for my junior and senior students who were still not understanding how to define domain and range of a graph because they couldn't understand intervals. Some teachers do not teach interval notation at all.

  • @vanessachen2330
    @vanessachen2330 7 лет назад +12

    Thank you! clear and precise explanation.

  • @dondequell1928
    @dondequell1928 7 лет назад

    You are a great teacher. The way you explained made it so much easier. It helped me understand Interval Notation & how to graph it on a number line. Thank you a lot!

  • @z.n.t.
    @z.n.t. 5 лет назад +1

    Thank you so much, Mrs. Rabinson. My college instructor recommended that I look these up since I was confused a bit.

  • @playboimo3341
    @playboimo3341 7 лет назад +8

    omg thank you I wasn't paying attention in class and needed this

  • @mistressmeowmeow6955
    @mistressmeowmeow6955 6 лет назад +1

    I was sooo confused about this but you cleared it up right and made it so easy to understand. Thank you

  • @lailafida7554
    @lailafida7554 4 года назад +1

    Wow superb explanation.

  • @graig88
    @graig88 5 лет назад

    Better instructions then my math teacher.

  • @HySeXtTh19
    @HySeXtTh19 6 лет назад

    This is explained SO well! You helped me so much! Thank you!

  • @maccha9661
    @maccha9661 6 лет назад +5

    Thank you for giving this video 👍👍

  • @maheenfaridi5616
    @maheenfaridi5616 4 года назад +1

    Explained soo well thank you

  • @ifeomamaduakor775
    @ifeomamaduakor775 6 лет назад

    Great teacher I can finally finish this homework

  • @LimeGamming
    @LimeGamming 5 лет назад +1

    You have saved me! Thankyou so much!

  • @year3thousandmusic
    @year3thousandmusic 6 лет назад

    you're a life saver, thank you :)

  • @jonjimenez2524
    @jonjimenez2524 8 лет назад +2

    thanks for the great explanation for those of us who forgot all of this stuff !

  • @brittanyhahnen5262
    @brittanyhahnen5262 5 лет назад +1

    Thank you for the simple explanation.

  • @aakash185
    @aakash185 7 лет назад +10

    thank you so much.......

  • @racheljune688
    @racheljune688 5 лет назад +1

    Thank you. You just helped me understand my math in college by watching this. :)

  • @obscure884
    @obscure884 5 лет назад +1

    Thank you!! You saved me!

  • @WCephei77HD
    @WCephei77HD 5 лет назад +1

    Fantastic! Thank you!

  • @sbarrera2863
    @sbarrera2863 7 лет назад

    this helped so much, thank you....!

  • @spacedeer44
    @spacedeer44 5 лет назад +2

    can this lady be my math teacher... my current teacher CANNOT teach lol

  • @filmtressmu8552
    @filmtressmu8552 5 лет назад +1

    Thank you, many high-fives and 'fist bumps' to you. Can you come and teach at my school? lol

  • @harry234
    @harry234 5 лет назад +1

    good vid Mary

  • @fitzpatric12
    @fitzpatric12 6 лет назад +1

    so glad i found this!!

    • @maryrobinson317
      @maryrobinson317  6 лет назад

      Glad it was helpful!

    • @fitzpatric12
      @fitzpatric12 6 лет назад

      more than helpful!..now i understand it very well!..and it help me on my exam! yes!!.. you are an awesome teacher!

  • @andyvizcaino4131
    @andyvizcaino4131 5 лет назад +1

    Thank you 🙏🏾 god bless u

  • @kassbest9572
    @kassbest9572 4 года назад

    Thank you sooo much professor you helped me so much, than you again

  • @Msj2thej
    @Msj2thej 6 лет назад +1

    Thank you!

  • @madscientist1391
    @madscientist1391 5 лет назад +2

    Thnq u very much

  • @troydumas8084
    @troydumas8084 5 лет назад +1

    wonderful!

  • @savandhannah1185
    @savandhannah1185 5 лет назад +1

    Thank you so much ahaha I get it now

  • @ahmaribarrineau7817
    @ahmaribarrineau7817 4 года назад +1

    You saved me ....

  • @wildestdreams6472
    @wildestdreams6472 5 лет назад +2

    praise from india

  • @plumberpipefitter5125
    @plumberpipefitter5125 5 лет назад +1

    VERY well done

  • @aliciakay6555
    @aliciakay6555 5 лет назад +1

    i wish u were my math teacher

  • @jannatulferdousimou1641
    @jannatulferdousimou1641 5 лет назад +1

    Thanks💘😍

  • @cierral1170
    @cierral1170 5 лет назад +1

    None of my problems look like this but thank you anyway

  • @AlexisGomintong-xz3lh
    @AlexisGomintong-xz3lh 9 месяцев назад

    Thankyou 😊😊

  • @futurecanadian8257
    @futurecanadian8257 7 лет назад +2

    thanks🙏

  • @ValentinFamilie
    @ValentinFamilie 4 года назад

    I still don't understand how do u know when to go left or right

    • @maryrobinson317
      @maryrobinson317  4 года назад

      If the arrow in the inequality points left, shade left on the number line. If the arrow points right, shade right. I made this video so students could better understand how to write intervals to express domain and range. Since domain are all x's, and the x-axis goes left and right, go left if < and right if >. Since range are all y's, and the y-axis goes up and down, remember that up is positive and down is negative on the y-axis. So if the inequality symbol is pointing left < (think left...low...or below), shade down, below the number. If the inequality symbol is pointing right > (think right...raise...as in raise up) and shade up, above the number.

  • @sarfoalfred719
    @sarfoalfred719 6 лет назад

    what about {x|7

    • @maryrobinson317
      @maryrobinson317  6 лет назад +1

      It's always easiest to understand if the variable is on the left side. So rewrite as x>7

  • @yahvin86
    @yahvin86 6 лет назад

    nice pen

    • @maryrobinson317
      @maryrobinson317  6 лет назад

      They are my favorite. I get them at the Dollar Tree 2 in a pack. Brand is INC or something like that.

  • @arnavjadhav296
    @arnavjadhav296 4 года назад +1

    The Southern accents kills me