GCSE Maths - How to Write Expressions for the nth term of Arithmetic Sequences #55

[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

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Most useful video ever!!! Added to liked ones!

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Thank you this helped me with my project

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I never found a more helpful channel for my studies. Please continue making videos on GCSE syllabus. Thank you so much!

[@Cognitoedu]

Ah thankyou Yusra, glad the channel is helping!

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Without doubt the most comprehensive (and simplest) explanation on the internet - thank you!

[@Cognitoedu]

Thanks misterbaleize glad it was helpful!

[@TheSoccerBrother]

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[@Cognitoedu]

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[@Abyss777]

@@Cognitoedu can you also make a video on complicated sequences.. like in which the common difference isnt the same for all the terms... I hv prblm finding the nth term of that.. if u can, that would be helpful!!!

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[@XxRandomAnimePlayz]

How did you know either way thanks

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I have been trying to understand this from almost 1 year but , my maths teachers at school aren't that good at explaining. Tomorrow is my maths paper and you re literally a lifesaver For real, thank you so muchhh❤

[@dania.taylor11]

I've been trying to find a helpful video for this topic all day and you just rescued me. Thank you so much for this video. Love the explanantion!!!!

[@Cognitoedu]

Ah thank you so much Dania, really glad we could help 👍

[@ayydomino30]

Thank you so much!! This kind of easy to understand content helps a lot, especially in a subject like mathematics. Mathematics is a broad subject and if you don't understand the basics or the simplest ways to solve the problem, you would easily lose confidence and be demotivated. You'd be more likely to quit and just shut down everything and sleep. When I attend classes to learn a lesson, I feel like it doesn't help me a lot. There's chaos, gossip, some students understand stuff before you do (which can easily make you feel inferior/weak in that subject) and it's not always the perfect environment to ask the teacher questions. I know we are supposed to clear any doubts we have by asking the teacher but it doesn't always work out. So, this kind of content by Cognito helps millions of students who struggle, not kidding!! Thank you to Cognito and the teachers, the content creators, the animators, the editors and the whole team in general. I really appreciate what you all are doing! Keep it going!

[@Cognitoedu]

We're really glad we could help you and keep you confident with maths 😊 Thanks!

[@asmirahim2]

Fantastic channel, explained very well, my 10yr old is so happy to find this, said he's making her understand so easily, happy child happy mummy😁

[@just4467]

out of the 7 videos your video was the only one that helped me

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Ok, I ain't in my GCSE's yet, but I discovered this channel in year 7, and it helped me pass my physics exam 😅 I lowkey never knew they extended onto other subjects 😂 😊😂😂

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just me who found nth term questions IMPOSSIBLE before this video, this has helped so so much!

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I am preparing for my mock exams, and I've never been so glad to come across a channel like I have now! Thank you so much, it was really helpful!

[@Cognitoedu]

Haha we're glad you found us! 🙌

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Mr you are the best teacher ever in my life thanks mr

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Love these videos, as a Maths teacher. I link these to my google classroom lesson so that students are able to revise and review at home.

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He legit explained this lesson better then my math teacher. He even did it in 6 mins

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I have been trying to understand this for months and it took you 6 minutes to make me get it. THANK YOU.

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6 mins helped more than a 45min lesson in school

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im not a teacher but i felt that xD

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Sooo much true 🙌💯

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[@archish405]

Another way to solve this is using the formula a(n-1)d , where a= first term, n= nth term and d= common difference. But it will only work for arithmetic sequences.

[@holleyjane7993]

Thank you for your videos. I'm a mother of 4 young children, two with special needs and trying my hardest to pass these exams alongside everything else, all so I can get into med school to become a doctor. You explain things in a way that's generally worth so much credit. Number one fan here! Exams in June for maths-english-biology, if I get my A's I will owe you a lot of credit!

[@Cognitoedu]

Thank you Holley! Best of luck 🤞

[@TypicalSullyEditz]

how did they go holley?

[@tejaschanchal763]

Wow I knew a method to find out nth term for arithmetic sequences, but it involved making a table of values with the sequence and the nearest n term. For example if I had 5, 9, 13, 17 I would try 4n which is 4,8,12,16, and then I would know that it is 4n+1. However my method sometimes had me getting stuck, but this method is infinitely easier and faster!!! Thank you for showing us this method, loving your videos on math, physics and chem. Good luck with future videos!!

[@Cognitoedu]

Thanks Tejas, glad to hear our videos could help! 😊

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Real

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These videos really help me when I forget some maths problems like nth and ect. And it helps to recap some maths

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[@Cognitoedu]

You're welcome 😊

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I love this i got my exams coming up and math is first keep making videos like this

[@anhnguyenphuong9790]

I have a question for finding the expression,could finding the number before the first term also be negative

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POV: u realised that u learnt this in 4th grade

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You learnt this in 4th grade? What year is that in the uk I swear I never learnt this until year 10

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Yeah im aisian🤣

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thank you so muchh ! I'm a 9th grader and I learned this last year but now I couldn't really remember anything. Thanks to this video I've understood everything clearly!

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spelling man no offence "Clare" is "clear" and "Asif" is "as if"

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maybe you shud leave maths and focus on ur english bro 😂😂

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Thank you so much.I looked at so many vidoes and did not understand until I found you!

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This is like the best explainer videos for edexel GCSE

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I stumbled upon this channel while revising and found it very helpful. Ever since I've been watching your videos to clear my doubts, This channel deserves more subscribers, keep up the good work and all the best!

[@Cognitoedu]

Thank you very much Mohammed, we really appreciate your support 🤩

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this is great thank you soo much this will rlly help me!!

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bro i have an exam in 5mins 💀

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[@silenceplzyeah2019]

What about if the difference is through division and multiplication??

[@myra197]

How about number sequences that has a geometrical pattern ( ×/÷ ) ?? How do you figure out what to put before 'n' in the nth term expression?

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I share your videos to every one

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This is my 1st math's video, I usually see this channels science videos more.

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I have been struggling to understand this topic for 3 hrs but after watching the vid i finally understood it tysm

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Thank you so much! This is so helpful! :)

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Amazing and so much help! Thank you!

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Blud u explain wy better than any teacher ttysm

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I love you i have an exam tomorrow and this helped alot

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i woyld like to thank this channel for saving me in eighth grade from failing

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These videos are always so helpful Thanks

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Mann, I wish you were my math teacher😢.

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cognito you're really saving my exams (lol, i know save my exams is also a site but i just prefer cognito). thank you so much

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what a saver ! mytextbook didnt even explain that clearly

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Great lessson!! Thank you!

[@imstrife]

You explain this way better than my maths teacher

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Thank you so much this was so helpful 😁

[@angelphamofficial123]

thanks, this helped so much!

[@3ly415]

What about doing it with fractions and decimals?

[@unknownuser_6969]

This video explains better than my teacher

[@mchoti1984]

Omg, thank you so much for this tutoriall ❤

[@aj20084]

Can i also use ur vids for IGCSE?

[@tahirmiah-j4e]

this was a good vid it helped me with my maths test . in yr 8 rn

[@billycooper21]

cảm ơn anh đã dậy em cách để làm nth term, ngày mai, em sẽ nhảy từ lầu 3 lên lầu 2 🙏🙏🙏🙏🙏🙏

[@CLARICEMOKTZETHUNGMoe]

does this work with all sequences?

[@RR-bq7tm]

what should be do when dividing a term?

[@amymaliakkal7550]

I am in year 9 and this helped a lot

[@pablo_eskimo1000]

For the nth term, how did you get the second digit? Like 4n+1, how did you get 1

[@Abeeredits_]

do the first number in the sequence (5) and then take away the number before n (4)

[@mateovalverde]

THANK YOUUUUU. AMAZING

[@alfieevans3779]

1 hour before my exam and you taught the better than my teacher

[@Jackkifahemate5]

Nice tutorial thank you Mr God bless 🎉

[@sudharshanthesutha8242]

Please answer this Work out the first 3 terms of a sequence when the nth term is 2n²+3

[@sissi9100]

I think it means to replace the n with 3, so n=1 2(1)^2+3= n=2 2(2)^2+3= n=3 2(3)^2+3= the answer

[@sudharshanthesutha8242]

@@sissi9100 thanks a lot😁

[@sissi9100]

@@sudharshanthesutha8242 np :)

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thank you so much you have videos on everything

[@asiyamalik6636]

very well explained, thank you

[@arindasanata5115]

Thank you so much. for explaining something I did not get for a year in just a few minutes

[@afg_afc]

@Cognito can we pls get the nth term of quadratic sequences video ;)

[@Daniel-j6d9s]

I have failed my maths exam and i had to repeate it and inshala I will get better marks Thanks alot cognito

[@TDgrwm]

3:25 how did u get 1???

[@atgu_19]

imagine there to be a previous term, a one before the first rule, you’d have to find this previous term (n-1) by taking the common difference and adding it to the first term

[@LouisRecalde]

thanks it made it clearer for me

[@magmafn412]

Cheers g, got a test in a couple days

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0:02 i can always recognise cognito with that sound

[@mufaddal21mala12]

Thanks Bro, I was trying for my entrance exam, this really helped me. your....your teaching style is very unique. GCSE math I have seen from a very hard POV as a ICSE Student but now I think its not impossible maybe a little hard but this concept, was Awesome!!!

[@MariliBartholomew]

interesting been very helpful to me

[@dukedude9974]

Can I know where did the 1 came from in 4ñ+1

[@isabelbarron2891]

because in the sequence, it goes up by +4. and 5 (the first number in this sequence) is not the very start, as it is more than four. so that means you take away 4 from 5 which is 1 and that goes at the end of the equation♡

[@jurikanecatagbo8344]

Thank you for this video

[@CAT_FB_1]

what if the sequences are non-linear? what should i do here?

[@CastVariable509]

I needed this for my test

[@hafsaanum2539]

Love your videos

[@rachnashah2408]

Can you please explain how to do it in fraction form

[@johannagadhikari3340]

You can also with the sequence, do this: 1.Find the difference 2.Below that, write the times table of the difference 3.Find out how from the times table you get to the sequence

[@zahrafatima6819]

Thank you very much this video was extremely helpful! I now understand it very well. Could you please do a video on Quadratic Sequences? I'm really struggling with that topic.

[@kereshastupart5701]

Is this for GCSE's? (Because my school teaches me this in yr8?)