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A-Level Maths: H1-01 [Integration: Introducing the Fundamental Theorem of Calculus] 

TLMaths
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31 окт 2024

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Комментарии : 63   
@latanezimbardo7129
@latanezimbardo7129 Год назад
Thank you so so much for these videos! I've done my A levels maths several years ago and have forgotten most of the stuff (but really didn't forget much, because I haven't really learnt much in the first place, it was all procedural learning at that time). Now I am relearning (well actually learning it "properly") to enable me to learn statistics, specifically, I am learning the proofs of propositions in the theory of Maximum Likelihood Estimation.Your videos make me understand so much better and made me like maths like never before.
@jackudygames90
@jackudygames90 6 лет назад
When are you expecting to have all videos in this playlist completed for? You've done well to get so many out so quickly.
@TLMaths
@TLMaths 6 лет назад
Thanks - I have no idea when it'll all be done, but I'm pretty sure I'm past half way.
@StephenRoderick-td4nb
@StephenRoderick-td4nb 6 лет назад
Great explanation sir, your teachings are very helpful, many thanks.
@TLMaths
@TLMaths 6 лет назад
Glad I can help! Thanks for watching!
@Poppy-lq8ww
@Poppy-lq8ww Год назад
Thanks so much for making this video! I use your videos for a great little summary of what I did in my lesson and I can tel they'll be great revision later on.
@nosir1479
@nosir1479 6 месяцев назад
lovely vid and great explanation
@matildawillcox1693
@matildawillcox1693 5 лет назад
Absolutely bloody brilliant!
@nourhansherif7685
@nourhansherif7685 5 лет назад
Hey jack, so in college we learnt a way of finding areas under a curve or line using the ‘trapizium rule’ and this had a particular equation in which we need to know... I was wondering if you have any videos of this at all? Thanks
@TLMaths
@TLMaths 5 лет назад
The Trapezium Rule videos are here: sites.google.com/site/tlmaths314/home/a-level-maths-2017/full-a-level/i-numerical-methods/03-numerical-integration
@a.3160
@a.3160 4 года назад
This is why ur a legend
@alanwood3072
@alanwood3072 3 года назад
do you have any techniques on conceptualising maths. I definitely want to know all this, however almost everything just goes over my head. I believe its because I have no context to references/concepts. sorry if this is a daft question, any help would on this would be MASSIVELY appreciated!
@TLMaths
@TLMaths 3 года назад
Drawing diagrams - I find that very important in understanding what's going on
@alanwood3072
@alanwood3072 3 года назад
@@TLMaths thank you very much! and great work with the videos btw!
@barksstuff8141
@barksstuff8141 3 года назад
"might not be gasping of air" made be crackle
@georgeloffhagen8749
@georgeloffhagen8749 2 года назад
Hi thanks for the video, I'm struggling to understand why f(x)=(A(x+h)-A(x))/h as if h tends to 0 this then surely it should disappear just like the extra part?
@georgeloffhagen8749
@georgeloffhagen8749 2 года назад
oh i just got it XD
@ghebregh5953
@ghebregh5953 3 года назад
Good afternoon, sorry to bother you but I would really appreciate it if you could help me with this question: f '(x)=(1-2x^1/3)^3 Given that f(8)=24, find f(1) Thanks
@TLMaths
@TLMaths 3 года назад
Expand brackets: f'(x) = (1-2x^(1/3))^3 = 1 - 6x^(1/3) + 12x^(2/3) - 8x Integrate: f(x) = x - (9/2)*x^(4/3) + (36/5)*x^(5/3) - 4x^2 + c sub in condition: 24 = 8 - (9/2)*8^(4/3) + (36/5)*8^(5/3) - 4*8^2 + c so: c = 568/5 Then f(x) = x - (9/2)*x^(4/3) + (36/5)*x^(5/3) - 4x^2 + 568/5 Finally: f(1) = 1133/10
@s4hlj
@s4hlj Год назад
Why does deltax become dx in the last part?
@girlonline3742
@girlonline3742 Год назад
I don’t really understand what f(x) actually is I thought it was just function/equation for a curve or line also could you elaborate 10:13 to 13:07 I don’t really understand how the 1st principles f’(x) equates to all of that
@Masowe.
@Masowe. Год назад
f'(x) is the first derivative of the f(x) which could any function. Its difficult because most times f(x) is used but as far as i am concerned it is just a function Hope this helps
@evilvoldemort123
@evilvoldemort123 6 лет назад
Does this still count for the new syllabus?
@TLMaths
@TLMaths 6 лет назад
Yes, the part of the spec is here: sites.google.com/site/tlmaths314/home/a-level-maths-2017/full-a-level/h-integration/01-fundamental-theorem-of-calculus "Know and use the Fundamental Theorem of Calculus". Essentially, what that means is that you need to know that evaluating an integral between two limits is the area under the graph - you won't be asked to replicate the theorem.
@elliebuck9659
@elliebuck9659 5 лет назад
yeah
@TheGamingWattsit
@TheGamingWattsit 4 года назад
Is the extra part the little rectangle or just the shaded part in it?
@TLMaths
@TLMaths 4 года назад
What you've got to clock onto is that we don't know the area of that little extra bit of the curve, but it is definitely smaller than the rectangle. If we can show that the rectangle tends to zero as h tends to zero, then anything smaller than it (inside) must do the same.
@TheGamingWattsit
@TheGamingWattsit 4 года назад
TLMaths thanks 👍
@TheGamingWattsit
@TheGamingWattsit 4 года назад
If f(x) = A’(x) does that mean integral of f(x) = A(x) ?
@TLMaths
@TLMaths 4 года назад
There's a constant of integration in there, but essentially yes
@TheGamingWattsit
@TheGamingWattsit 4 года назад
TLMaths since A(x) = integral of f(x) + c, if we subbed x = a into this it would find the area under the curve f(x) between x = a and x = 0 ?
@TLMaths
@TLMaths 4 года назад
So the area would A(a) - A(0)
@TheGamingWattsit
@TheGamingWattsit 4 года назад
TLMaths because we defined A(x) as the area from x = 0 to x, to find the until x=a in my scenario would surely be A(a) ? (Sorry about all the questions)
@TLMaths
@TLMaths 4 года назад
By definition of A(x) being the area from x=0 to x, the consequence of this is that A(0) = 0. But in general when integrating from x=a to x=b, the area would be A(b) - A(a)
@hs_hs5632
@hs_hs5632 3 года назад
I'm not quite sure I understand why we divide the area of the rectangle by h?
@TLMaths
@TLMaths 3 года назад
I rearrange to get f(x)= at 6:11, which in turn divides the extra bit by h.
@christyjane8284
@christyjane8284 3 года назад
im doing my first year and i have an exam next week on the 18/12/2020 will I need to know this for that.....
@TLMaths
@TLMaths 3 года назад
I don’t know what’s on your test?
@mikhailhuntovich2528
@mikhailhuntovich2528 4 года назад
Wouldn't H move closer and closer to the origin on the X axis when you take away X?
@TLMaths
@TLMaths 4 года назад
h is the gap between x and x+h - it is the gap that is getting smaller. We're not moving everything to the origin.
@mikhailhuntovich2528
@mikhailhuntovich2528 4 года назад
@@TLMaths Ah, thanks for the help and the quick reply
@aineequreshi585
@aineequreshi585 4 года назад
Hi, do we need to know this for AS ?
@TLMaths
@TLMaths 4 года назад
Yes you should be aware of this
@ninanakagawa8943
@ninanakagawa8943 3 года назад
i don't get it...why we need to divide the area of rectangle by h?
@TLMaths
@TLMaths 3 года назад
I rearrange to get f(x)= at 6:11, which in turn divides the extra bit by h.
@Lapichant
@Lapichant 3 года назад
(f(x+h)-f(x))h is the extra bit. So do the same to it as in the f(x) equation
@sludge5328
@sludge5328 3 года назад
Is this studied in UK after 10th ?
@TLMaths
@TLMaths 3 года назад
The 10th what?
@sludge5328
@sludge5328 3 года назад
@@TLMaths 10th grade
@TLMaths
@TLMaths 3 года назад
It's material you would meet after GCSE Maths, which is studied up to age 16, in A-Level Maths, if that helps?
@zkillerwolfz3308
@zkillerwolfz3308 3 года назад
i dont get it lol
@TLMaths
@TLMaths 3 года назад
What can I help with?
@zkillerwolfz3308
@zkillerwolfz3308 Год назад
@@TLMaths i know now ty