Turn on thread page Beta
    Offline

    2
    ReputationRep:
    (Original post by Jai Sandhu)
    I think it would be sketchy, STEP allows any innovative idea so you will be set for that
    it's not really innovative. It's that sometimes they ask you a problem and teach you an unorthodox method to solve it, when really it can be solved using standard methods

    this is especially true in the sort of algebra inequalities you need to prove in statistics I think
    Offline

    3
    ReputationRep:
    Sorry that I have written it out in here but her is how I did it.

    f(k+1)-4f(k)= (4^(k+1)+6k+14)-4(4^(k)+6k+8)
    =(4^(k+1)+6k+14) -(4^(k+1)+24k+32)
    =-18k-18
    =18(-k-1) which is divisable by 18

    Good luck in your FP1 tomorrow I am hoping to get an A!
    Offline

    19
    ReputationRep:
    (Original post by Damien_Dalgaard)
    You legend
    Name:  laughing-hard.jpg
Views: 58
Size:  15.6 KB
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by Jai Sandhu)
    4n
    + 6n + 8

    



f(k) = 4^k + 6k + 8



f(k+1) + f(k) = 4^{k+1} + 6(k+1) + 8 + 4^(k) + 6k + 8



f(k+1) + f(k) = 4^k +4 \times 4^k + 6(k+1) +6k + 8 + 8



f(k+1) + f(k) = 5 \times 4^k + 12k + <b>22</b>



f(k+1) = 5 \times 4^k + 12k + 22 - f(k) 



f(k+1) = 5 \times 4^k + 12k + 22 - (4^k + 6k + 8)



f(k+1) = 4 \times 4^k + 6k + 14



f(k+1) = 4 \times (4^k + 6k + 8) - 18k - 18



f(k+1) = 4 \times f(k) - 18(k - 1)

    I think you can do the rest?
    Thank you, I think it is 22 there instead, I owe you one.

    (Original post by Patrick2810)
    Didn't you already get A in further maths?
    want to hopefully max out on the ums + fp2 involves some fp1.
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by alexneuty)
    Sorry that I have written it out in here but her is how I did it.

    f(k+1)-4f(k)= (4^(k+1)+6k+14)-4(4^(k)+6k+8)
    =(4^(k+1)+6k+14) -(4^(k+1)+24k+32)
    =-18k-18
    =18(-k-1) which is divisable by 18

    Good luck in your FP1 tomorrow I am hoping to get an A!
    Thank you, it needed use of f(k) I see.

    Kind Regards, same to you

    Will rep you when it comes back
 
 
 

2,652

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should predicted grades be removed from the uni application process
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

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