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

#mlungisinkosi #grade12 #matric

[@MUSA_M20]

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

[@MUSA_M20]

Which makes it -6x +6 = 0 -6x = -6 x = -6/-6 x = 1

[@themencaveadventures8616]

I also saw it too

[@MUSA_M20]

Never mind he fixed it

[@MlungisiNkosi]

Thank you so much

[@southafricandishes7177]

Very helpful😌🙏

[@austin_tiyani]

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!!!!!

[@MlungisiNkosi]

It’s my pleasure. Thank you

[@fisokuhlendlovu652]

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😅

[@MlungisiNkosi]

Wow congratulations… Ngicela leyonkomo uyibeke ngizoyilanda 😂

[@brunofernandes9347]

How?😳😳😳👏

[@sisonkesokhela6611]

@@MlungisiNkosi Nice ✅😎

[@kingtobhi]

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

[@lufunogeoffrey2112]

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

[@MlungisiNkosi]

You’re most welcome

[@nalediprincess6989]

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

[@MlungisiNkosi]

You’re welcome ☺️

[@zandilesithole5400]

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

[@MlungisiNkosi]

The pleasure is all mine

[@thando_t1723]

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

[@princessleratoooh2530]

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

[@MlungisiNkosi]

You’re most welcome 🤗

[@nonhlanhlamnisi1442]

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]

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

[@annahbanda5819]

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

[@MlungisiNkosi]

The pleasure is all mine… 🙂

[@mangopeselatola]

The best

[@Cheesy_450]

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

[@Lauren-fx]

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

[@akayliajordyn6974]

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

[@j3ffrreeDahmer]

The original equation... f(x)

[@thobilemasoka6655]

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

[@MlungisiNkosi]

Lol @ Lungising 😂

[@thobilemasoka6655]

@@MlungisiNkosi 😂😂

[@ncumisakroti6932]

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

[@MlungisiNkosi]

Thank you 😊

[@boipelosalome7209]

Aibo ! May God bless you Mr ❤

[@MlungisiNkosi]

You’re welcome 🤗

[@confidencelebogang6472]

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

[@MlungisiNkosi]

I definitely will

[@t-crocngwenya7836]

​@@MlungisiNkosi Pls Sir🙏

[@LifeWithAaliyah_]

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?

[@MlungisiNkosi]

Sharp

[@leonsiwele]

thank you sir😭❤️

[@lindelwamthethwa9528]

This lesson was sooo helpful. Thank you🙏

[@MlungisiNkosi]

You’re welcome ☺️

[@nickynicole581]

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

[@MlungisiNkosi]

Happy to hear that!

[@katemeades4007]

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

[@MlungisiNkosi]

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

[@kamogelomokale9183]

You really helped me a lot yoohh😭Thank you Mr

[@MlungisiNkosi]

You’re welcome ☺️

[@PetiteGirlChronicles]

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

[@MlungisiNkosi]

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

[@rachealnkosi8567]

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

[@MlungisiNkosi]

Thank you Racheal

[@Topglessonschannel]

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

[@MlungisiNkosi]

My pleasure

[@kjrmabina6972]

Very helpful sir. Best teacher ❤

[@MlungisiNkosi]

You’re welcome

[@thandintuli6522]

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

[@zoeymoonsamy21]

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.

[@boipelosalome7209]

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

[@MlungisiNkosi]

Watch the next video. You will see

[@ntsitselelemirriam1116]

I really enjoyed the lesson thanks a lot

[@MlungisiNkosi]

You're welcome

[@raphaeldiko1991]

You are phenomenal Sir

[@MlungisiNkosi]

Thank you so so much 🤗❤️

[@kingtobhi]

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😂😂

[@KeaMoloantoa]

Same🤣🤣

[@user-mh6pb4be3b]

Sir at which school are you teaching ?😊

[@tsholow1933]

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

[@MlungisiNkosi]

Ok, noted..

[@aphelelephindiwe7943]

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

[@MlungisiNkosi]

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

[@robertmphaka5208]

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]

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

[@MlungisiNkosi]

@@robertmphaka5208 awesome thank you 😊

[@khadijaamjad9504]

Thx for being a life saver 😭😭

[@MlungisiNkosi]

The pleasure is all mine

[@robertmphaka5208]

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

[@MlungisiNkosi]

You’re welcome ☺️

[@gunna3197]

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

[@MlungisiNkosi]

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

[@gunna3197]

thank you sir...

[@mokgadileferela4755]

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

[@MlungisiNkosi]

Correct…

[@luyandanene9724]

Great lesson 🙃🇿🇦

[@MlungisiNkosi]

Thank you 🤗

[@ronrestaino8182]

That was a good example.

[@NtshuxekoNgobeni-ox6bd]

Point inflection please check it

[@paida3110]

Enjoyed the lesson 😊

[@MlungisiNkosi]

You’re welcome

[@vhoramu307]

GOD BLESS YOU🙏

[@lulamalurh6112]

sir how do we find concave down?🙂

[@MlungisiNkosi]

Use the inflection point

[@summe_rfever14]

Thank you so so soooooo much😭😭

[@theresankosi806]

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

[@MlungisiNkosi]

Awesome 👏🏾

[@lizmamabolo5120]

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

[@MlungisiNkosi]

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

[@NkosinomusaMabuza-sx1mq]

Thank you sir

[@zoeeentulie9191]

Thank u soo much sir💙

[@MlungisiNkosi]

You are most welcome 🤗

[@tlhokomelomokoena105]

You are very good.I hope you work for KZbin

[@MlungisiNkosi]

Let’s get those numbers up…

[@sarahadem7774]

❤❤

[@MlungisiNkosi]

My pleasure

[@boipelosalome7209]

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

[@MlungisiNkosi]

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

[@user-fe7zg6bw8x]

Hallo sir, I keep on getting ×^2-4×-8

[@innocentiazondo7598]

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

[@innocentiazondo7598]

GOT IT NOW

[@MlungisiNkosi]

I’m glad you got it

[@charlotte1987]

Sir sawubona 😀

[@MlungisiNkosi]

Sawubona Charlotte 😊

[@lenahlungilemnisi5041]

Hello I dont understand the point of inflection.

[@MlungisiNkosi]

What do you not understand about it?

[@zenzilenompilo3083]

Good day sir you have made a mistake some where

[@MlungisiNkosi]

Where is somewhere?

[@zenzilenompilo3083]

In tbks questions 1b the sings 4 musf be negative and 2 positive

[@siamisangletlhogela2389]

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

[@MlungisiNkosi]

You’re most welcome