You are Here: Home >< Maths

# C2/FP1 sequence Watch

1. (Original post by UKBrah)
I think Ive clocked onto something..
So if I consider the sequence formed by the left of the product of the terms it forms a sequence 1,3,5 etc and same for the right, 2,4,6,8 etc.
The nth term for both of those is (2n-1) and 2n respectively, so can I multiply them together to form (2n-1)2n? It works!
Good.
2. (Original post by Mr M)
Good.
How would one find the general term of a sequence like (3 x 9), (7 x 21), (11 x 34) etc.. is it even possible?

thanks for helping me btw
3. (Original post by UKBrah)
How would one find the general term of a sequence like (3 x 9), (7 x 21), (11 x 34) etc.. is it even possible?

thanks for helping me btw
Did you mean (3 x 9), (7 x 21) (11 x 33) as this is easy?

Or were you just typing random numbers?
4. (Original post by Mr M)
Did you mean (3 x 9), (7 x 21) (11 x 33) as this is easy?

Or were you just typing random numbers?
Yeah I wrote random numbers, is it possible to find an rth term for a sequence like that. Since I lack the intuition to see the rth term, I would have to use the method I used above.
5. (Original post by UKBrah)
Yeah I wrote random numbers, is it possible to find an rth term for a sequence like that. Since I lack the intuition to see the rth term, I would have to use the method I used above.
There isn't a general rule for random numbers!

In general you can look for a pattern in the first numbers and a different pattern in the second numbers. In the modified version I gave you both sets of numbers form arithmetic sequences.
6. (Original post by Mr M)
There isn't a general rule for random numbers!

In general you can look for a pattern in the first numbers and a different pattern in the second numbers. In the modified version I gave you both sets of numbers form arithmetic sequences.
Thanks dude I find that so cool.
The product of the nth term of the sequence of the left and right of the product is the nth term of the original sequence
7. Yep

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 30, 2013
Today on TSR

### Is this person a genius?

...with these A Level results?

### I think I'm transgender AMA

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.