Evaluate a limit at infinity with a radical in denominator

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  • เผยแพร่เมื่อ 31 ม.ค. 2025

ความคิดเห็น • 57

  • @albinopanda9255
    @albinopanda9255 6 ปีที่แล้ว +15

    How is it that TH-cam gives better explanations than in-class sessions? This makes tons of better sense.

    • @brianmclogan
      @brianmclogan  6 ปีที่แล้ว +1

      happy to be able to help!

  • @sherifkumadoe9848
    @sherifkumadoe9848 6 ปีที่แล้ว +30

    this video saved me from wasting another hour in deciphering my assignment.❤❤❤❤🙌

  • @seven7230
    @seven7230 7 ปีที่แล้ว +6

    I am from Romania🇷🇴 , and I like very much, how you handle the math problems ... I want this style in Romania
    Thank you for share

    • @brianmclogan
      @brianmclogan  7 ปีที่แล้ว +1

      happy to be there for you, I have a lot of videos, hope they all can help

  • @DarkMFG
    @DarkMFG 5 ปีที่แล้ว +14

    What if the limit was approaching negative infinity? Would the square root be negative as well?

    • @eddybigbelly
      @eddybigbelly 2 ปีที่แล้ว

      i need the answer to that

    • @theboulder4914
      @theboulder4914 ปีที่แล้ว

      no since it is squared on the inside

    • @gabelojeco5824
      @gabelojeco5824 11 หลายเดือนก่อน +2

      Yes...the value used for x will change depending on the limit is approaching

  • @tekno2623
    @tekno2623 13 วันที่ผ่านมา

    Thank you!

  • @jesterthelegend926
    @jesterthelegend926 ปีที่แล้ว

    wow I've been blasting my brain trying to figure out a problem that can be solved this way.

  • @colorfullmuchroom
    @colorfullmuchroom 10 หลายเดือนก่อน

    you get straight to it, like it actually makes sense omg

  • @katotolentino7099
    @katotolentino7099 ปีที่แล้ว

    Thank you very much 🥰

  • @凛凛-g4e
    @凛凛-g4e 7 ปีที่แล้ว +2

    Thank you for helping my assignment ❤️

    • @brianmclogan
      @brianmclogan  7 ปีที่แล้ว

      you are very welcome!

    • @Vyc7cyc5xd5
      @Vyc7cyc5xd5 6 ปีที่แล้ว

      Lynn Nguyen did it help you though????!! Hmmmm

  • @LEXX-Lazarus_
    @LEXX-Lazarus_ ปีที่แล้ว

    wow you answered my question about how to know what +/- value to take from the square root at the end of my answer in 5 seconds lmao

  • @elizabethmwangi3272
    @elizabethmwangi3272 7 ปีที่แล้ว +3

    This video are absolutely marvelous..easy to follow and comprehend

    • @brianmclogan
      @brianmclogan  7 ปีที่แล้ว +1

      happy to be able to help!

  • @fmyrico
    @fmyrico 11 หลายเดือนก่อน

    Explained it the best 🐐

  • @kirkcallanta1285
    @kirkcallanta1285 2 ปีที่แล้ว

    Thank you this helped a lot

  • @erinannelies
    @erinannelies 6 ปีที่แล้ว +1

    Thanks! Makes sense now..

    • @brianmclogan
      @brianmclogan  6 ปีที่แล้ว +1

      awesome! happy to help Erin!

  • @itsnourrr6699
    @itsnourrr6699 5 ปีที่แล้ว +1

    is the answer will change if the function will approaches to negative infinity??????? please answer my question as fast as you can!

    • @aasavshah3183
      @aasavshah3183 4 ปีที่แล้ว +2

      Yes, you are going to be anticipating negative values. I hope 1 year was quick enough

    • @adamc2846
      @adamc2846 3 ปีที่แล้ว

      @@aasavshah3183
      Lol i hope u dont take a year to answer this
      I’ve calculated it for negative infinity but it’s still the same answer

    • @elizekine
      @elizekine 4 หลายเดือนก่อน

      @@adamc2846 i hope three years were quick enough. x divided by negative x is negative one, then 2 MINUS negative one -- two negatives equal a positive -- is 3. then in the denominator, 6x^2/-x^2 = x squared divided by negative x squared is negative 1, 6 divided by -1 is -6. so your answer would be 3/-6 or negative one half.

    • @adamc2846
      @adamc2846 4 หลายเดือนก่อน

      @@elizekine heeey thanks for your answer, even thought i dont need it anymore 😂😂😂😂😂 graduated from highschool already

    • @elizekine
      @elizekine 4 หลายเดือนก่อน

      @@adamc2846 yeah I know I’m totally kidding 😭

  • @kentmichelena6473
    @kentmichelena6473 5 ปีที่แล้ว +3

    No need to Rationalize the Denominator sir?

    • @giovannirojas3952
      @giovannirojas3952 4 ปีที่แล้ว +1

      If you were to rationalize the denominator, then you would then have a radical on the numerator, which then itself creates a problem.

  • @hansolo8263
    @hansolo8263 4 ปีที่แล้ว

    you are hero !

  • @h-townfishing1382
    @h-townfishing1382 3 ปีที่แล้ว

    how did you decide to divide everything by x^2

    • @khosroyavari8914
      @khosroyavari8914 2 ปีที่แล้ว +3

      You divide every term by the highest power of the denominator

    • @johndysalomon6125
      @johndysalomon6125 5 หลายเดือนก่อน

      @@khosroyavari8914 can I like divide the numerator with the highest power in the numerator since it's different from the denominator because the denominator has square root?

    • @hammadahmad8668
      @hammadahmad8668 2 หลายเดือนก่อน

      ​@@johndysalomon6125first of all you look for the highest power of x in both numerator and denominator then you divide each term with highest power sometimes you can only divide numerator or denominator for the dake of simplicity

  • @mariarosales5386
    @mariarosales5386 7 ปีที่แล้ว +9

    why is it 6/x^2 i was thinkinit was just 6since the X^2's cancel out

    • @brianmclogan
      @brianmclogan  7 ปีที่แล้ว +1

      the square root does not distribute across addition

    • @999ZZZ36
      @999ZZZ36 6 ปีที่แล้ว +1

      he fixes it later

  • @tupacshakur4784
    @tupacshakur4784 6 ปีที่แล้ว

    Why x/x is 1 here? ,as x tends to infinity ,so infinity/infinity should be indeterminate,plz correct me if am wrong

    • @nvfpv
      @nvfpv 5 ปีที่แล้ว +2

      Simplify first then take the limit.

  • @conniequiban6500
    @conniequiban6500 6 ปีที่แล้ว

    Is the solution same if the radical is in the numerator?

    • @brianmclogan
      @brianmclogan  6 ปีที่แล้ว

      try it by graphing in desmos

  • @ArthAebryllSAnong
    @ArthAebryllSAnong 4 ปีที่แล้ว

    what happened to the number 7??

    • @mommamia5060
      @mommamia5060 ปีที่แล้ว

      the seven would be divided by infinity, so it would get infinitely small and practically zero. That's why the 7/x^2 is just replaced with zero.
      I know i'm 3 years late, but oh well

  • @phillan3748
    @phillan3748 6 ปีที่แล้ว +1

    I like how the way he explain however..he always makes a lot of mistake....and he corrects them later on...really annoying...but good job though

  • @tmwbatman1160
    @tmwbatman1160 15 วันที่ผ่านมา

    First of all... You have a pretty significant mistake within the first 5 seconds of the video. I believe you meant the square root of x squared. Second of all, the long pause in the middle kills the flow of this video. Third... Another significant mistake.
    You're incompetent. I genuinely have to believe the positive comments attached to this video are fake.

  • @aluz7247
    @aluz7247 4 ปีที่แล้ว

    The square root of x does NOT EQUAL plus or minus x!!!!

  • @joshuafeickert2448
    @joshuafeickert2448 ปีที่แล้ว

    This guy is a liar. Infinity divided by Infinity will not always equal one.

    • @brianmclogan
      @brianmclogan  ปีที่แล้ว +1

      Liar liar pants on fire, caught

  • @tmwbatman1160
    @tmwbatman1160 6 ปีที่แล้ว

    Awful.

    • @brianmclogan
      @brianmclogan  6 ปีที่แล้ว

      why?

    • @tmwbatman1160
      @tmwbatman1160 6 ปีที่แล้ว

      I’m pretty sure that the square root of x does NOT equal x as stated at the start of the video. We all have brain farts, but if you produce videos they need to be high quality.

    • @perezr9623
      @perezr9623 5 ปีที่แล้ว +1

      While you do make a point, I think he was just trying to demonstrate the logic behind the concept of the square root of any number being plus or minus