Grade 12 Calculus Lesson 4 | Plotting and Interpretation of Cubic Functions | Mlungisi Nkosi

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  • Опубликовано: 1 авг 2024
  • #mlungisinkosi #grade12 #matric

Комментарии • 127

  • @MUSA_M20
    @MUSA_M20 2 года назад +98

    Very helpful thanks a lot
    Mara sir inflection at 28:56 mins is -6x + 6 not just -6x sir

  • @austin_tiyani
    @austin_tiyani 2 года назад +29

    I can't believe that I understood this in less than an hour!! Thank you so much Mr Mlu, you've just made Maths to be simple. bless!!!!!

  • @kingtobhi
    @kingtobhi Год назад +6

    Never have I ever enjoyed a Calculus lesson. Enter Mr Mlungisi Nkosi👏🏽👏🏽👏🏽. You Sir are heaven sent❤🔥

  • @lufunogeoffrey2112
    @lufunogeoffrey2112 2 года назад +12

    God bless you❤❤.... I wish I knew you starting from grade 10 ... know I am in grade 12 and because of you I understand everything

  • @fisokuhlendlovu652
    @fisokuhlendlovu652 2 года назад +69

    MR thanks you are doing a great job many benefits from your services and as i was doing g12 last year in march i got 41% and i started following your channel I ended up getting 84%(physics) kube useduze ngabe ngakuhlabel nenkomo😅

  • @nalediprincess6989
    @nalediprincess6989 2 года назад +9

    Thank you so much Mr nkosi for this channel. It is really helpful . May God continue to bless you🥰

  • @zandilesithole5400
    @zandilesithole5400 Год назад +4

    Thank you for making cubic functions much more easier and understandable . Thank you so much Mr Nkosi .

  • @thando_t1723
    @thando_t1723 Год назад +3

    Great lesson really enjoyed it 🥰Thank you SIR !!!!!!!!❤❤ it took a lot of discipline to watch it 😭🥲💔

  • @princessleratoooh2530
    @princessleratoooh2530 2 года назад +9

    😭I’m writing math tomorrow , and I understand thanks to your channel

  • @annahbanda5819
    @annahbanda5819 Год назад +4

    Thank you Mr Nkosi for creating this channel it's really helping me a lot ❤️✨

  • @Cheesy_450
    @Cheesy_450 2 месяца назад +2

    Isn’t the POI -6x +6
    Therefore the points are (1;-2)

  • @nonhlanhlamnisi1442
    @nonhlanhlamnisi1442 2 года назад +10

    Sir , I can never thank you enough❤ I'm upgrading my physical science and maths and you really made me wonder why I didn't do better on metri because everytime I study with your videos I'm like 🤦‍♀️ haibo mos lento ilula. And yes I recommend you all the tiiime.
    I wanted to ask if you gonna be doing probability and financial maths anytime soon or sizazbona ?🙈

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад +2

      Thank you so much Nonhlanhla. Yes I’ve started recording probability and I will publish it in the coming day. Keep your eyes locked right here

  • @lindelwamthethwa9528
    @lindelwamthethwa9528 Год назад +3

    This lesson was sooo helpful. Thank you🙏

  • @thobilemasoka6655
    @thobilemasoka6655 2 года назад +4

    Thank you sir for Lungising this chapter🙏❤️❤️😀 needed this so bad.

  • @ncumisakroti6932
    @ncumisakroti6932 2 года назад +3

    You're a veryy good teacher sir , thank youu .

  • @akayliajordyn6974
    @akayliajordyn6974 11 месяцев назад +1

    Hi sir, im a bit confused, once you find your x points for your P.O.I and your stationary points, in which equations do we substitute it in to find the corresponding y values

  • @nickynicole581
    @nickynicole581 Год назад +2

    Thank you alot for your videos they really help us in improving🙏

  • @rachealnkosi8567
    @rachealnkosi8567 2 года назад +2

    Thank you sir 🙏🙏 happy Sunday everyone fav place for the whole year 🙂

  • @Topglessonschannel
    @Topglessonschannel Год назад +1

    Thank you so much sir you make things simple for real.❤🤝

  • @leonsiwele
    @leonsiwele 3 месяца назад +2

    thank you sir😭❤️

  • @boipelosalome7209
    @boipelosalome7209 2 года назад +2

    Aibo ! May God bless you Mr ❤

  • @kamogelomokale9183
    @kamogelomokale9183 2 года назад +2

    You really helped me a lot yoohh😭Thank you Mr

  • @LifeWithAaliyah_
    @LifeWithAaliyah_ Год назад +2

    Mr Nkosi, for the second one. To substitute for the TP point I used (-2) and I got (16) and I felt like it made sense. Am I wrong for writing that as my turning point?

  • @Lauren-aDot
    @Lauren-aDot 11 месяцев назад +1

    What if I get 2 different factors ? How will I be able to choose the correct one

  • @ntsitselelemirriam1116
    @ntsitselelemirriam1116 2 года назад +2

    I really enjoyed the lesson thanks a lot

  • @raphaeldiko1991
    @raphaeldiko1991 2 года назад +2

    You are phenomenal Sir

  • @kjrmabina6972
    @kjrmabina6972 Год назад +1

    Very helpful sir. Best teacher ❤

  • @robertmphaka5208
    @robertmphaka5208 2 года назад +2

    Anyways thank you sir when it came to calculas I would only write the first principle them leave the ret but this time😭😭😭im going to attempt everything thank you so much

  • @confidencelebogang6472
    @confidencelebogang6472 Год назад +7

    Sir if you get a chance❤please do past questions paper about cubic functions

  • @ronrestaino8182
    @ronrestaino8182 10 месяцев назад +1

    That was a good example.

  • @PetiteGirlChronicles
    @PetiteGirlChronicles Год назад +2

    Hi Sir, on part 28:42 how did you get 3x squared + 6x. please kindly assist

    • @MlungisiNkosi
      @MlungisiNkosi  Год назад

      Please check the lessons before this one on the rules of differentiation

  • @katemeades4007
    @katemeades4007 2 года назад +1

    Hi sir!!! Just wanted to know if all the math videos will be out before the may rewrite? ❤️

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад +2

      I don’t think so… I almost worked myself to death trying to do that.

  • @boipelosalome7209
    @boipelosalome7209 2 года назад +1

    But Mr how do we factories the equation that does not have bx squared

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад +1

      Watch the next video. You will see

  • @kingtobhi
    @kingtobhi Год назад +1

    41:10 sir was having a doctor strange moment there. I don’t know what was going on. I just used the quadratic equation and reversed my answer to get my brackets. A little cheat code I use😂😂

  • @khadijaamjad9504
    @khadijaamjad9504 Год назад +1

    Thx for being a life saver 😭😭

  • @luyandanene9724
    @luyandanene9724 2 года назад +2

    Great lesson 🙃🇿🇦

  • @aphelelephindiwe7943
    @aphelelephindiwe7943 2 года назад +2

    Sir please do a video on graph interpretation questions that involve for which x-values 😭😭😭

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад

      Most definitely Phindi. I have started recording probability now… I’ll get to those at a later stage.

  • @theresankosi806
    @theresankosi806 2 года назад +1

    Thank you sir. I didn't understand this in class but now I've just mastered it.❤🔥🔥

  • @paida3110
    @paida3110 2 года назад +1

    Enjoyed the lesson 😊

  • @mangopeselatola
    @mangopeselatola 2 месяца назад +1

    The best

  • @vhoramu307
    @vhoramu307 Год назад

    GOD BLESS YOU🙏

  • @summe_rfever14
    @summe_rfever14 9 месяцев назад +1

    Thank you so so soooooo much😭😭

  • @tsholow1933
    @tsholow1933 Год назад +2

    Hi sir may I please have a video of how you factorise on the x intercept, thank you😇

  • @gunna3197
    @gunna3197 2 года назад +2

    sir can you please do an example if they give you a QUADRATIC FUNCTION BUT THEY WANT YOU TO DRAW A CUBIC FUNCTION

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад

      I actually did that in my class this morning. I will look at that very soon…

    • @gunna3197
      @gunna3197 2 года назад +1

      thank you sir...

  • @thandintuli6522
    @thandintuli6522 Год назад +3

    21:50 when using synthetic division
    i keep on getting X^2-4x+8 😢😭

    • @zoeymoonsamy21
      @zoeymoonsamy21 3 месяца назад

      Hi, I also used synthetic division and got 0. Make sure to include placeholders for missing coefficients, meaning where a coefficient is missing in synthetic division put a 0.

  • @zoeeentulie9191
    @zoeeentulie9191 2 года назад +1

    Thank u soo much sir💙

  • @BlessingNB
    @BlessingNB 9 месяцев назад +1

    Thank you sir

  • @lizmamabolo5120
    @lizmamabolo5120 2 года назад +1

    for some reason I find it easier when you write on paper.

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад +1

      I hear you… but ke, we also have to move ahead with the times

  • @user-mh6pb4be3b
    @user-mh6pb4be3b 4 месяца назад

    Sir at which school are you teaching ?😊

  • @robertmphaka5208
    @robertmphaka5208 2 года назад +1

    Sir isn't the point of inflection-6x +6
    Since the first derivative was -3x^2 + 6x
    So we remove the x and we left with the 6

    • @robertmphaka5208
      @robertmphaka5208 2 года назад +2

      😭oh sorry I saw that you fixed it after
      Thank you

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад +2

      @@robertmphaka5208 awesome thank you 😊

  • @tlhokomelomokoena105
    @tlhokomelomokoena105 2 года назад +1

    You are very good.I hope you work for RUclips

  • @mokgadileferela4755
    @mokgadileferela4755 Год назад +1

    I got an answer of 6x from the activity given to us, is it correct?

  • @NtshuxekoNgobeni-ox6bd
    @NtshuxekoNgobeni-ox6bd 4 месяца назад +1

    Point inflection please check it

  • @sarahadem7774
    @sarahadem7774 2 года назад +1

    ❤❤

  • @lulamalurh6112
    @lulamalurh6112 Год назад +1

    sir how do we find concave down?🙂

  • @user-fe7zg6bw8x
    @user-fe7zg6bw8x 6 месяцев назад

    Hallo sir, I keep on getting ×^2-4×-8

  • @innocentiazondo7598
    @innocentiazondo7598 Год назад +1

    SIR I GOT A LIL CONFUSED ON INFLATION I GOT MY ANSWER AS 1

  • @charlotte1987
    @charlotte1987 2 года назад +1

    Sir sawubona 😀

  • @boipelosalome7209
    @boipelosalome7209 2 года назад +1

    Also Mr there's physics part in culculus 😭😭😭😭

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад +2

      I’ll be publishing that during the course of the week.

  • @lenahlungilemnisi5041
    @lenahlungilemnisi5041 2 года назад +1

    Hello
    I dont understand the point of inflection.

    • @MlungisiNkosi
      @MlungisiNkosi  2 года назад

      What do you not understand about it?

  • @zenzilenompilo3083
    @zenzilenompilo3083 2 года назад +1

    Good day sir you have made a mistake some where

  • @siamisangletlhogela2389
    @siamisangletlhogela2389 2 года назад +1

    🥲❤everyday I thank God for you... I understood in less than an hour