Hey there! Sign in to join this conversationNew here? Join for free

Check if this is correct! Watch

Announcements
    • Community Assistant
    • Thread Starter
    Online

    14
    ReputationRep:
    Sorry, a bit of a click bait title with the capitals. Can someone check if this explanation is correct? Maths question -80% of those who clicked lost at this point. Thanks

    Posted from TSR Mobile
    Attached Images
     
    • Community Assistant
    • Thread Starter
    Online

    14
    ReputationRep:
    Wasn't expecting this level of interest lmao

    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    yh
    Offline

    3
    ReputationRep:
    (Original post by Moltenmo)
    Sorry, a bit of a click bait title with the capitals. Can someone check if this explanation is correct? Maths question -80% of those who clicked lost at this point. Thanks

    Posted from TSR Mobile
    That looks fine. However, the proof would have worked much more neatly if you used  2n and  2n+1 as your consecutive numbers. You'd end up with  4(2n^2+n) + 1 , which is more explicit in showing the required result.
    • Community Assistant
    • Thread Starter
    Online

    14
    ReputationRep:
    (Original post by kingaaran)
    That looks fine. However, the proof would have worked much more neatly if you used  2n and  2n+1 as your consecutive numbers. You'd end up with  4(2n^2+n) + 1 , which is more explicit in showing the required result.
    Ahh thank you! One question I have. Is it better to use 2n and 2n+1 as the consecutive numbers as opposed to n and n+1 in proof questions? Or was it only better in this scenario?

    Posted from TSR Mobile
    • Community Assistant
    • Thread Starter
    Online

    14
    ReputationRep:
    (Original post by Moltenmo)
    Ahh thank you! One question I have. Is it better to use 2n and 2n+1 as the consecutive numbers as opposed to n and n+1 in proof questions? Or was it only better in this scenario?

    Posted from TSR Mobile
    Providing there are no other conditions to the consecutive numbers of course.

    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by Moltenmo)
    Ahh thank you! One question I have. Is it better to use 2n and 2n+1 as the consecutive numbers as opposed to n and n+1 in proof questions? Or was it only better in this scenario?

    Posted from TSR Mobile
    Hmm, it depends on what you're trying to show it is a multiple of. Here we wanted a multiple of 4, so I realised that because we have squares, we may as well use  2n , as when squared, that'll give us the factor of 4 we want.

    However, using  2n and  2n+1 will result in larger coefficients, which given the nature of questions you're likely to get, will probably make the proofs come out a lot easier / nicer.
    • Community Assistant
    • Thread Starter
    Online

    14
    ReputationRep:
    (Original post by kingaaran)
    Hmm, it depends on what you're trying to show it is a multiple of. Here we wanted a multiple of 4, so I realised that because we have squares, we may as well use  2n , as when squared, that'll give us the factor of 4 we want.

    However, using  2n and  2n+1 will result in larger coefficients, which given the nature of questions you're likely to get, will probably make the proofs come out a lot easier / nicer.
    That makes sense. Thank you.

    Posted from TSR Mobile
 
 
 
  • 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
    Will you be richer or poorer than your parents?
    Useful resources

    Study tools

    Rosette

    Essay expert

    Learn to write like a pro with our ultimate essay guide.

    Thinking about uni already?

    Thinking about uni already?

    See where you can apply with our uni match tool

    Student chat

    Ask a question

    Chat to other GCSE students and get your study questions answered.

    Creating

    Make study resources

    Create all the resources you need to get the grades.

    Planner

    Create your own Study Plan

    Organise all your homework and exams so you never miss another deadline.

    Resources by subject

    From flashcards to mind maps; there's everything you need for all of your GCSE subjects.

    Papers

    Find past papers

    100s of GCSE past papers for all your subjects at your fingertips.

    Help out other students

    Can you help? Study help unanswered threads

    Groups associated with this forum:

    View associated groups
  • 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

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