Quadratic Sequences: nth Term | Algebra | Maths | FuseSchool
In this video we’re going to look at quadratic sequences, and how to find the nth term for them.
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Пікірлер: 25
Thank youuuu!!! You did a better job at explaining it than my maths teacher haha, all my teachers over complicate things
@fuseschool
3 жыл бұрын
Happy to hear that we could help!
@Jack-ff2zs
3 жыл бұрын
@@fuseschool also do you have insta?
@fuseschool
3 жыл бұрын
Yes we do, check @fuseschool 😉
In the part 1:23 you said 1n squared underneath the original sequence. The new sequence shows up. Well how did you get that new sequence? I didn’t understand.
@tronus8586
3 жыл бұрын
I think that because it's 1n^2, she wrote out the list of squared numbers from 1 onwards. If it was 2n^2 or 3n^3, then the sequence of squared numbers would double and triple respectively (e.g. for 2n^2 it would be 2,8,18,32,50,etc.)and if it was, say, 1n^3, then it would be the cubed numbers, but don't trust me on this because I'm not 100% sure lmao
Great video!
Thank you so much!
@fuseschool
3 жыл бұрын
No worries! 🙌
How did u find the 2n² that u have u use it last parrrrt
Lets goooooo
actually its today aaaah ........
thank you exam tomorrow
@fuseschool
4 жыл бұрын
Hope it went well!
How did u get 2as the difference in the 2nd question ❓
@fuseschool
3 жыл бұрын
What point in the video are you referring to specifically (time stamp)?
@maitrimore6246
3 жыл бұрын
@@fuseschool 2:40 in the nth =2n^2+n+2
@fuseschool
3 жыл бұрын
So in order to find the final formula for the nth term (which is what you're referring to at 2:40), we need to find the nth term formula for the "difference" sequence (circled at 2:26). +1 is the actual difference, so it will go before 'n', and because we don't usually write 1n, we just leave it at n. If 3 is the first term, then what needs to be added to 1 (n=1, first term) to get 3? 2! That's how you get n+2. Then you add it to the final formula and get 2n^2+n+2
@maitrimore6246
3 жыл бұрын
@@fuseschool okkk thanks that was very helpful ☺️
@fuseschool
3 жыл бұрын
No worries! Glad it helped!
hi teacher, can i speak with you ??
yo whos the lady in the video?
Hi
@fuseschool
4 жыл бұрын
Hey!
@reenaalbert5296
3 жыл бұрын
Hi