this is the most clear explanation i have ever watched.. Thanks a lot
@1stClassMaths7 ай бұрын
Glad to hear that!
@NicolasPayne-o1hАй бұрын
Same
@RobloxianX5 ай бұрын
Thank you so much, my school did a 1 hour lesson on this and they werent able to teach anyone. I sent this to everyone in my class, we are saved! Thank you so much, you're doing gods work
@CassandraGayle-fs3tcАй бұрын
dang, schools can really make us go to the mental hospital sometimes. youre in a public school i guess
@Stratmaster_10 ай бұрын
You have no idea how much this video helps before an exam!!! 😂 🫡
@Goose_G.O.D5 ай бұрын
😂😂 facts
@JakeOfShire7 ай бұрын
Wow! this was honestly life changing. It makes a thousand times more sense. I no longer look at this question with dread! Thank you 😅
@thesingingchef293 ай бұрын
Thank you so much! Also here's another method: a: second diff / 2 b: 3a+b = first diff of first term c: a+b+c = first term Now, all you have to do is sub a, b, and c into the equation T(n) = an²+bn+c. *Leave T and n as variables
@ZeeZeeBoyАй бұрын
Yess that's the one I know. It's very simple
@pluto_26825 ай бұрын
You just saved me 😭 literally writing my math exam tomorrow .. great video
@danielippolito-fletcherscr32737 ай бұрын
This is a spectacular explanation. I am a middle school math teacher who has been struggling to grasp an easy way to explain this for weeks. Thanks so much!
@1stClassMaths7 ай бұрын
Excellent I am glad it was so useful! I picked it up off another teacher a few years ago :)
@truthwins58048 ай бұрын
It helped a lot . Thanks ❤❤❤ I didn’t understand a thing about how to find the nth term of a quadratic sequence but after this video , you would think I was Einstein!! 😂😂 Thanks again😊😊
@1stClassMaths8 ай бұрын
You are welcome….Einstein. 😁
@Lafentity8 ай бұрын
Bro thanks so much. This deserves a sub, you teach a much clearer explanation than my tutor.
@hashemmchicken836710 күн бұрын
Like yr teacher
@librarysong861711 күн бұрын
Sitting here two nights before an exam, you literally saved my life
@staroffixial81599 ай бұрын
Thank you so much! Now im prepared for my gcses :)
@GamingWithJas-ff4yf3 ай бұрын
You taught this much better than my teacher, my teacher explained it differently, i did understand but your explanation is way better, thank you a lot im using you to revise for my end of year 9 assessment
@drrkwolf4 ай бұрын
a+b+c = first original term 3a + b = 1st diff first term 2a = 2nd diff first term a+b+c = 8, 12, 20, 32, 48 3a+b = 4, 8, 12, 16 2a = 4, 4, 4 a = 2, b = -2 c = 8 2n^2 - 2n + 8
@L0St_Memories04 ай бұрын
yea i was searching for this
@Thatcoolguy56Ай бұрын
May I please ask how you got a as 2 and b as -2
@JoelPersson200320 күн бұрын
This is the easiest method right? Much easier than the method explained in the video.
@1stClassMaths20 күн бұрын
@@JoelPersson2003 this method oftens leads to a lack of understanding of what is going on. Those who just learn rules without knowing what they are doing or why often struggle with more difficult problems. In my experience of teaching this students much prefer the method I used in the video. Check the pinned comment...
@faizaax43768 ай бұрын
omg i went on like 50 websites trying to get help but this video saved mee
@1stClassMaths8 ай бұрын
50, that’s a lot!
@C.E.Ocoffee27 күн бұрын
You are the best, this video taught me more than any of my teachers have ever about this topic, I finally understand how to do these types of questions!!!!!, THANKYOU!!!!
@1stClassMaths27 күн бұрын
You're very welcome!
@new-qo8rb5 ай бұрын
I get so confused -- how do i remember all this? i simply will forget 😔😔
@SaaayaNonopeАй бұрын
It's easy no jokes
@gracehathaway27158 ай бұрын
Honestly, ty so much .I tried to watch the corbet maths video on this and was on the verge of tears 😂.this vid makes so much sense now ❤
@1stClassMaths8 ай бұрын
You're very welcome!
@Storm_Fly4 ай бұрын
By far the most clear explanation and straight to the point . Thank u sir !
@disappointedshrek86814 ай бұрын
(second difference/2)×n² square numbers multiplied by 2 (including 1) subtract the original sequence by the square numbers multiplied by 2 find the general rule for the new linear sequence brought forth by subtracting the two (first difference×n + first term-x=first difference)
@basselmohamed56808 ай бұрын
The last example is 2nsqure+-3n+5 not 2nsqure-3n+5 ,you forget to put the plus, if you want to work out the first term of the original sequence by using 2nsqure-3n+5 it will be 2-2 which is 0 but if use 2nsqure+-3n+5 it will be 2+2 which 4, in all cases we adding because the third sequence plus the second sequence equal the first sequence
@1stClassMaths8 ай бұрын
Hi. Unfortunately you are not correct here. 2n^2 + - 3n + 5 is equivalent to 2n^2 - 3n + 5 (which is the answer). When you add a negative it is just the same as subtracting. Your errors comes in your substitution. If you substitute in n = 1 you get 2*(1)^2 - 3(1) + 5 = 2 - 3 + 5 = 4
@gracehathaway27158 ай бұрын
Get told😂
@toneless43453 ай бұрын
@@1stClassMaths why minus first, what about bedmas, 2-3+5, don't u have to add 3+5 first, which would give u 8?
@z.a0752 ай бұрын
this is honestly so so helpful. may god bless you. you have just saved me
@1stClassMaths2 ай бұрын
You're so welcome!
@REDACTEDREDACTED-f9p3 ай бұрын
sometimes theres a sub question after you find the nth term of the sequence where it asks you to prove if a number is apart of the nth term of the sequence that you just found out. how do you do those sort of questions? (also thanks for explaining this topic so well it makes alot more sense now)
@yoitsfaizy87783 ай бұрын
very comprehensible, cheers m8
@Bollywoodwiddeepak3 ай бұрын
I was trying to find the Nth term of quadratic equation from last two days but could not understand. But you explained it very well in short method 👍
@tatertotsassemble4 ай бұрын
this was so clear! my teacher has been so difficult with explaining it to me lately, and always got annoyed when i asked “too many questions” so i haven’t been able to understand ANY of it. but this cleared pretty much everything up. as a student in year 9, i feel much more prepared for my gcse prep now
@ieatmentoss17144 ай бұрын
you should get another teacher if they're saying you ask “too many questions”
@RedditsFunTales4 ай бұрын
@@ieatmentoss1714 exactly, school is a place for development. teachers should be pleased if a student asks a lot of questions as it shows their interest in the topic and forecasts they need help. must be a crappy teacher if that is their excuse.
@BroDevsRBLX4 ай бұрын
bro ur doing this in 9th grade?
@kanan5974 ай бұрын
youre in y9 theres no need to be prepping for gcses rn, take it from a y11 :)
@aleynak-wn5xq4 ай бұрын
@@kanan597they still have mocks and internal exams
@theokongnaphakdee9391 Жыл бұрын
thank you so much!!!! that was very helpful!!!!!!🙏🙏🙏🙏🙏
@PeterMbugua-f5g3 ай бұрын
Thank u for the nice explanation. I finally undertood this!!
@1stClassMaths3 ай бұрын
You are welcome!
@Crukks19737 ай бұрын
how do you get the values 1,4,9,16, and 25 as the square numbers
@1stClassMaths7 ай бұрын
1 x 1 = 1 2 x 2 = 4 3 x 3 = 9 4 x 4 = 16 5 x 5 = 25
@JamesKnox-t8xАй бұрын
Thank you so much this helped me to understand work and now I can do it with ease
@1stClassMathsАй бұрын
Excellent news, glad it was helpful.
@pen78225 ай бұрын
god bless you wonderful man
@1stClassMaths5 ай бұрын
Thanks!
@Unlimxts66w4 ай бұрын
Thank you so much I now understand and tomorrow I have exam you deserve a sub
@1stClassMaths4 ай бұрын
Thanks for the sub and good luck!
@alisa61707 ай бұрын
the explanation and visuals were so easy to understand!! thank you so much
@1stClassMaths7 ай бұрын
You're very welcome!
@چاووشعمرانی6 ай бұрын
Hello teacher so thank you because your teaching so simply God willing every time get happy ❤
@ElaineWilkins-v1k2 ай бұрын
You are a legend thank you for explaining it so well
@1stClassMaths2 ай бұрын
Glad it helped!
@Fire.edits.146 ай бұрын
thank you so much, i tried watching a lot of videos, this is the best and most clear one :)
@1stClassMaths6 ай бұрын
Glad to hear that!
@Pegasus107078 ай бұрын
thank you 😊
@1stClassMaths8 ай бұрын
You're welcome 😊
@mugdha41287 ай бұрын
Man thank you so much for this video you are a legend i have a assessment on this topic and it is worth half my grade aand i didnt understand a thing my teacher taught me vut after watching this video i understand so much that i might just ace the assignment thx so much
@1stClassMaths7 ай бұрын
Fantastic!
@MuhammadHammad-k7i2 ай бұрын
best explination ever sir thanks a lot
@hutt12325 ай бұрын
Hello, why doesn’t the quadratic sequence formula work here? I do an^2 + bn + c but i get incorrect answers while in other questions i use the formula and its correct
@1stClassMaths5 ай бұрын
Hi. I am not unsure what you mean? Can you give an example and I will try see what's happening :)
@tushiglutbekh54537 ай бұрын
you made the problem easy to solve😁😁
@omarbouhassoun17754 ай бұрын
In the second example it’s supposed to be 3n-1 not 3n+5
@1stClassMaths4 ай бұрын
Well it is actually neither of those. It is -3n + 5 since -3 + 5 = 2
@seblemekete84135 ай бұрын
Thank you so mach😅 you save ME if i donot see this vidio i will get
@AbdelrahmanAyad-v3k6 ай бұрын
Amazing explanation!
@rizwanafzal70768 ай бұрын
Very good.thanks for such good video. Very useful.
@1stClassMaths8 ай бұрын
You are most welcome
@charles-np1rc5 ай бұрын
thank you helped a lot
@zafarziya-ip3dq9 ай бұрын
Thank you so much ❤
@1stClassMaths8 ай бұрын
You're welcome 😊
@supariley3 ай бұрын
THANK YOU SO MUCH
@1stClassMaths3 ай бұрын
NO PROBLEM
@Evie-l1r Жыл бұрын
Thanks!
@jhyghp7 ай бұрын
This helped so much thank you sooook much❤️❤️❤️❤️❤️
@1stClassMaths7 ай бұрын
No problem 😊
@PaviPavi-u7q8 ай бұрын
thank you very much bro.............
@1stClassMaths8 ай бұрын
Thank you too :)
@GreatDavidOzioma6 күн бұрын
I finally understand
@HassanKhan-oc6fp3 ай бұрын
Thanks!
@xmayx25074 ай бұрын
THANK YOU
@hamzasherasmat65938 ай бұрын
sorry to ask, but how did you find a sequence for 3n^2 on the first one, do i just square root like the first one i have to square root, then the second one, then the third one?
@1stClassMaths8 ай бұрын
Don't apologise! For the 3n^2 sequence you do the square numbers so 1,4,9,16,25 then multiply them all by 3.
@hamzasherasmat65938 ай бұрын
@@1stClassMaths Ohhhh, thanks sir!
@s4-yt4 ай бұрын
10 mins before my exam 😂
@basselmohamed56808 ай бұрын
Your video is very helpful
@1stClassMaths8 ай бұрын
Glad you think so!
@usmanayoub14343 ай бұрын
Thank you it's working
@changi_4759Ай бұрын
how did you get the 3, 12, 9 and so on in finding the linear part? need an immediate response
@1stClassMathsАй бұрын
Immediate is wishful thinking! I think you mean 3, 12, 27, ...? We are doing 3n^2 so we started with n^2, which is the square numbers, 1, 4, 9, 16, 25 Then we multiply each of these by 3 giving 3, 12, 27, 48, 75
@JohnGood-w8d6 ай бұрын
Thank you very much!
@АйпериЫрысбекова-т1х7 ай бұрын
I didn't understand
@galaxyz37094 ай бұрын
Practice and you will get it
@alescuzyehhh4 ай бұрын
@@galaxyz3709yep!!
@waleedmalik7854 ай бұрын
If you want a easier way to find b,the equation 3a + b=the first term of the first sequence.It will give you value of b,you can find the value of c using the quadratic equation,an2+bn+c,put the value of a and b and find c,btw the 2 in an2 represents the n being squared.
@multiixandom3 ай бұрын
I don’t, I don’t get it
@GamingWithJas-ff4yf3 ай бұрын
What its so easy
@shayanghasemi19932 ай бұрын
Thanks a lot
@1stClassMaths2 ай бұрын
No worries!
@samaaa84008 ай бұрын
THANK U SM
@1stClassMaths8 ай бұрын
No problem
@arqhur4 ай бұрын
thank you!
@StrikingStew3 ай бұрын
saved the paper 2
@andrewr32432 ай бұрын
What happens if 2nd difference is an odd number like 5? Would nth term be written starting with 2.5n
@1stClassMaths2 ай бұрын
Yes
@andrewr32432 ай бұрын
@1stClassMaths wow thanks for the super swift reply!! 😁😁
@GobitsaMaeletsa8 ай бұрын
What if the answer after subtracting the sequence is a sequence that has the same number
@1stClassMaths8 ай бұрын
Great question. This just means the nth term of it is simply the constant number. So if it's always 3, 3, 3, 3, your nth term might be something like n^2 + 3
@GobitsaMaeletsa8 ай бұрын
@@1stClassMaths ohhh thank you so much❤
@falingunit7 ай бұрын
you can actually apply the same idea to find out the nth term of any polynomial
@wewiee6 ай бұрын
What if the second difference is not constant?
@1stClassMaths6 ай бұрын
The sequence is not a quadratic sequence.
@wikaarad6 ай бұрын
This was genuinely so helpful and clear thank you 🙏🏼
@1stClassMaths6 ай бұрын
You're welcome!
@Shimeez5 ай бұрын
thanks!
@1stClassMaths5 ай бұрын
No problem!
@shahdahmed64365 ай бұрын
THANKYOUTHANKYOUTHANKYOUTHANKYOU!!!
@1stClassMaths5 ай бұрын
NP
@itstong3810 күн бұрын
What about cubic?
@sephorarufai6 ай бұрын
thank you broo😭 my teachers can’t explain it properly. but why tf would i need to know how to find an nth term?? it’s so long asw like what the heck
@k.kai24346 ай бұрын
Ikr idek why but at least i can do it now💀
@KOZBON-lv8zy4 ай бұрын
i did this question and I got 2nsquared - 1n + 3, can you tell me what i did wrong? - (2,7,16,29,46)
@1stClassMaths4 ай бұрын
It is 2n^2 - n + 1
@KOZBON-lv8zy4 ай бұрын
@@1stClassMaths Oh really? Chat gpt is wrong then 🤣 THANK YOU!!!
@1stClassMaths4 ай бұрын
chatgpt is pretty bad at maths.
@jacobhaile3834 ай бұрын
On the second sequence where did you get the square numbers from
@1stClassMaths4 ай бұрын
Square numbers are from 1x1, 2x2, 3x3 etc
@educationservices74267 ай бұрын
Why we use the 1,4,9,16,25 values to multiply with woth to get the answer 3,12,27,48,75...kindly anyone plz help me at this stage bcz I didn't get the point from where we get 1,4,9,16,25 values
@1stClassMaths7 ай бұрын
They are the square numbers.
@educationservices74267 ай бұрын
@@1stClassMaths ...and in the last how he get -1 that is the value of c he find out ..how it comes?
@frigid.editzz4 ай бұрын
I DID understand
@deonxholi98007 ай бұрын
why is it 4n -1 but not for ex 4n+1
@trabbelsiskyee Жыл бұрын
THANK YOU SO MUCH
@1stClassMaths Жыл бұрын
You're welcome!
@JaneYin-v7kАй бұрын
i dont get it from 2:09 to 2:40
@remarkablething587410 ай бұрын
cheers mate
@LovelearningAgain4 ай бұрын
Thanks a bunch. To the point. If you don't mind, what is the name of the software that you used in this video?
@1stClassMaths4 ай бұрын
Thanks. I use powerpoint.
@oshish2636 ай бұрын
Anybody can solve this Find the nth term of the sequence 3,5,10,22,47,93
@talharafaqat30843 ай бұрын
I didnt get a linear sequence the question was find the nth term of the sequence 4,9,16,25,36
@Yche-21M9 ай бұрын
bro how you did that 2:18 3n²
@1stClassMaths9 ай бұрын
Bro not sure what you mean? Where did the 3n^2 come from or how did I get the numbers 3, 12, 27, 48 and 75?
@nicole277779 ай бұрын
because you halve the second difference (6)
@Sadisfynotfound4 ай бұрын
5:06 i dont understand the linear part because 2(1)^2 is 4 but you said 2!!!!!!!
@Sadisfynotfound4 ай бұрын
ok i understand now thx
@nicolaeveritt555510 ай бұрын
Thanks so much
@1stClassMaths10 ай бұрын
You're welcome!
@RoBotOnd10 ай бұрын
5:16 how did u get the +5!? Pls 😢answer brother i got an exam tomorrow
@1stClassMaths10 ай бұрын
To get from -3 to +2 (the first term) we add 5
@RoBotOnd10 ай бұрын
@@1stClassMaths Thank you so much!! ❤️
@NpcFR0110 ай бұрын
What about having 3 layer on the sequence?
@1stClassMaths10 ай бұрын
It would be a cubic sequence
@NpcFR0110 ай бұрын
@@1stClassMaths is that any method to solve it?Btw thank you for your response
@1stClassMaths10 ай бұрын
Hi yes there is but it is not needed for GCSE. Search for cubic nth term videos. 😀
@user-rubbishsoup8 ай бұрын
even with the best explaination vid about nth term Quadratic Sequence, it still sounds complicated enough. This shows how stupid this tpoic is
@k.kai24347 ай бұрын
Yeah 💀
@Abdullah_r_d6g3 күн бұрын
❤
@charcoalotte20216 ай бұрын
Okay so the thing is my sequence is 4,9,16,25 how do i do that?
@1stClassMaths6 ай бұрын
Same way. The second difference is 2 so you have n^2. Subtract this (1,4,9,16,25) from the sequence and you get 3,5,7,9,11 The nth term of the linear part is 2n+1 so n^2 + 2n + 1
@alescuzyehhh4 ай бұрын
@@1stClassMathsoh wow you replied to soo many comments!! that mustve taken a long time ahah.. thank you so much for this video, its so helpful.. i was struggling to understand it in my class but this made it so much easier for me!!
@1stClassMaths4 ай бұрын
I try to answer as many of the questions as I can.
@alescuzyehhh4 ай бұрын
@@1stClassMaths 😂😂😂
@AlejadraАй бұрын
I didn't understand the squared numbers part
@ramlakhan2972Ай бұрын
Take half of common difference.. 6/2=3
@jamespiggin46123 ай бұрын
Class video
@1stClassMaths3 ай бұрын
1st Class
@abdelrahmanmohamad91906 ай бұрын
I suck at this chapter
@k.kai24346 ай бұрын
Same💀
@Twilamation46435 ай бұрын
Not really helping but at least I have an idea on what the nth term of 5 7 11 14 19 is