Join TSR now and get all your revision questions answeredSign up now
    • Community Assistant
    Offline

    19
    ReputationRep:
    (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! :cool:
    Good.
    • Thread Starter
    Offline

    0
    ReputationRep:
    (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
    • Community Assistant
    Offline

    19
    ReputationRep:
    (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?
    • Thread Starter
    Offline

    0
    ReputationRep:
    (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.
    • Community Assistant
    Offline

    19
    ReputationRep:
    (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.
    • Thread Starter
    Offline

    0
    ReputationRep:
    (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
    Offline

    0
    ReputationRep:
    Yep
 
 
 
Poll
If you won £30,000, which of these would you spend it on?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

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

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