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

    18
    ReputationRep:
    (Original post by tigerz)
    LOOL you crazy person! I had no idea you did Econ! :five: Your murdering these exams, they aint got nothing on you!
    Ahh thats good, hmm its cool you may get lucky! Your UMS scores will never be tainted by 1 half-arsed bull**** score, its fine, i'll think of an excuse
    Its good to have the maths together :')
    I do You do Econ too? I'm not that great at Econ though... I can never satisfactorily finish a paper in the given time :/ I scraped an A at AS (84 for Econ1, 76 for Econ2). Retook Econ2... can't be having Bs floating around making me look bad

    Hopefully not, I'm not sure how I'll live with such an impurity amongst my scores!
    Offline

    0
    ReputationRep:
    (Original post by DJMayes)
    I'm sorry, if I told you that (At least my way of doing it) it makes the entire question trivial. However, you might find that trying it out with some values of x may give you a feel for the question.

    (Also, don't spend too much time on it; it's not really appropriate to A Level (Although I can assure you you know all the knowledge required to do it) and I wouldn't want it to get in the way of any important revision etc.)
    Fair do's, and yeah will do cheers. Not really, only got FP1 left and that's on induction as well, so its good practice
    Offline

    2
    ReputationRep:
    (Original post by tigerz)
    LOOL, I don't need 'em, makes my bag heavier ^_^ Meh I always act embarrassing, used to it now!
    I don't understand half of them, but there's to occasional solvable one (which takes me half a day!), Its not too difficult, I learn't how to use LaTeX like 10 days ago!
    just use this website after a while you remember the shortcuts http://www.codecogs.com/latex/eqneditor.php
    I sliped in school.. when it was snowing.. my strict head of learning saw me.. even she laughed :rofl:
    ahh cools, I think I may as well do it as well then
    Thank you
    Offline

    0
    ReputationRep:
    (Original post by mynameisntbobk)
    I sliped in school.. when it was snowing.. my strict head of learning saw me.. even she laughed :rofl:
    ahh cools, I think I may as well do it as well then
    Thank you
    LOOOL haha that's jokes, no problemo yeah i've started attempting the question now

    (Original post by justinawe)
    I do You do Econ too? I'm not that great at Econ though... I can never satisfactorily finish a paper in the given time :/ I scraped an A at AS (84 for Econ1, 76 for Econ2). Retook Econ2... can't be having Bs floating around making me look bad

    Hopefully not, I'm not sure how I'll live with such an impurity amongst my scores!
    Indeed I do, I like Economics! Maths and Econ are the only 2 A levels I really want to do
    I shall find out my grades soon (well not really, August is far) although I had to retake unit 1! Awwh yeah its quite difficult finishing them but I manage to do it somehow
    pssht justinawe? B? Can't be having that, :nah::noway:
    Offline

    0
    ReputationRep:
    (Original post by tigerz)
    LOOOL haha that's jokes, no problemo yeah i've started attempting the question now



    Indeed I do, I like Economics! Maths and Econ are the only 2 A levels I really want to do
    I shall find out my grades soon (well not really, August is far) although I had to retake unit 1! Awwh yeah its quite difficult finishing them but I manage to do it somehow
    pssht justinawe? B? Can't be having that, :nah::noway:
    What exam board for economics do you do? and what did u get for unit 1 if you don't mind me asking. I do OCR hence the weird f58241q89412841284812... etc stuff

    At first for unit 1 I got a high/mid B (76), demanded a remark and it went to a low A (84), so really need 96ums to secure the 90+ums average, it all depends on how F582 went, and I thought it was quite easy but the mark schemes always deceive me.
    Offline

    0
    ReputationRep:
    (Original post by Robbie242)
    What exam board for economics do you do? and what did u get for unit 1 if you don't mind me asking.

    At first for unit 1 I got a high/mid B (76), demanded a remark and it went to a low A (84), so really need 96ums to secure the 90+ums average, it all depends on how F582 went, and I thought it was quite easy but the mark schemes always deceive me.
    Heya, I do edexcel I think you do differently as I have EC01/2 not F582, I got 69 (yes justinawe my UMS scores are ALWAYS half arsed bull-****)
    Oh I've never actually got a paper remarked! That's quite good it went up by 8 UMS, owch I just want an A haha I think I got it this year, but only just about...

    (Original post by DJMayes)
    There don't seem to be many questions being thrown about tonight. Here's one for you all:

    Spoiler:
    Show


    Let  x be an integer which can be written as the sum of two square numbers. Prove that  2^n x can be written as the sum of two square numbers for all natural numbers n.

    x=an integer which can be wirrten as the sum of two square numbers \therefore x=a+b where a and b are two square numbers

    Is this the correct starting point?
    Offline

    2
    ReputationRep:
    (Original post by tigerz)
    LOOOL haha that's jokes, no problemo yeah i've started attempting the question now
    you think that's bad, thats nothing
    ah okay, I'll leave you to that, have fun, I'll just look at the latex codes
    Offline

    18
    ReputationRep:
    (Original post by tigerz)
    Indeed I do, I like Economics! Maths and Econ are the only 2 A levels I really want to do
    I shall find out my grades soon (well not really, August is far) although I had to retake unit 1! Awwh yeah its quite difficult finishing them but I manage to do it somehow
    pssht justinawe? B? Can't be having that, :nah::noway:
    Econ was the only A-Level I didn't particularly want to do I always wonder if I should have done Chemistry instead...

    In my defence, I only got a B because I somehow missed out an entire 12 marker though that's not much of a defence I guess
    Offline

    18
    ReputationRep:
    (Original post by tigerz)
    x=an integer which can be wirrten as the sum of two square numbers \therefore x=a+b where a and b are two square numbers

    Is this the correct starting point?
    Try x = a^2 + b^2 (where a and b are integers) instead, easier to work with.
    Offline

    0
    ReputationRep:
    (Original post by mynameisntbobk)
    you think that's bad, thats nothing
    ah okay, I'll leave you to that, have fun, I'll just look at the latex codes
    Haha, yeah there have been more embarrassing scenarios I guess! Yup, time to solve this lovely maths question

    (Original post by justinawe)
    Econ was the only A-Level I didn't particularly want to do I always wonder if I should have done Chemistry instead...

    In my defence, I only got a B because I somehow missed out an entire 12 marker though that's not much of a defence I guess
    Ahh I do chem, I don't really like my board though which ruins it
    LOOL, that was my problem to, I did bad in section B and did good at the calculations and definitions in Section A!

    (Original post by justinawe)
    Try x = a^2 + b^2 (where a and b are integers) instead, easier to work with.
    Ahh yeah that's a more intelligent choice, thank you
    Offline

    16
    ReputationRep:
    (Original post by justinawe)
    Econ was the only A-Level I didn't particularly want to do I always wonder if I should have done Chemistry instead...

    In my defence, I only got a B because I somehow missed out an entire 12 marker though that's not much of a defence I guess
    I was thinking the same thing about economics instead of chemistry the other day .
    Offline

    2
    ReputationRep:
    Sorry guys, wanted to test out my latex
    please ignore this if you don't want to be insulted by it's level of difficulty
    Spoiler:
    Show

    1a. show that \[\displaystyle\int_{3}^{5}(5x^4-2x +6)dx \] can be written as \ \[[x^5 - x^2 + 6x]^5_{3}\]

    b. Hence or otherwise, solve \[\displaystyle\int_{3}^{5}(5x^4-2x +6)dx \]
    Offline

    18
    ReputationRep:
    (Original post by brittanna)
    I was thinking the same thing about economics instead of chemistry the other day .
    Aha! Guess the grass is always greener...
    Offline

    16
    ReputationRep:
    (Original post by mynameisntbobk)
    Sorry guys, wanted to test out my latex
    please ignore this if you don't want to be insulted by it's level of difficulty
    Spoiler:
    Show

    1a. show that \[\int_{3}^{5}5x^4-2x +6 \] can be written as \[[x^5 - x + 6x]^5_{3}\]

    b. Hence or otherwise, solve \[\int_{3}^{5}5x^4-2x +6 \]
    That's some beautifully done 'latexing' there. You should be proud! And I think you may have missed a squared somewhere .
    Offline

    18
    ReputationRep:
    (Original post by mynameisntbobk)
    Sorry guys, wanted to test out my latex
    please ignore this if you don't want to be insulted by it's level of difficulty
    Spoiler:
    Show

    1a. show that \[\int_{3}^{5}5x^4-2x +6 \] can be written as \[[x^5 - x + 6x]^5_{3}\]

    b. Hence or otherwise, solve \[\int_{3}^{5}5x^4-2x +6 \]
    Try putting in a "\displaystyle" before your "\int", it makes your integral symbol bigger and is much more pleasant on the eye.
    Offline

    13
    ReputationRep:
    (Original post by brittanna)
    That's some beautifully done 'latexing' there. You should be proud! And I think you may have missed a squared somewhere .
    Not to mention a dx :eek:
    • TSR Support Team
    • Very Important Poster
    • Welcome Squad
    Offline

    20
    ReputationRep:
    TSR Support Team
    Very Important Poster
    Welcome Squad
    (Original post by justinawe)
    Try putting in a "\displaystyle" before your "\int", it makes your integral symbol bigger and is much more pleasant on the eye.
    And use "\left" and "\right" to increase the size of the square brackets.
    Offline

    16
    ReputationRep:
    (Original post by Felix Felicis)
    Not to mention a dx :eek:
    I was trying not to be too picky .
    Offline

    18
    ReputationRep:
    (Original post by reubenkinara)
    And use "\left" and "right" to increase the size of the square brackets.
    yep, that too.
    Offline

    0
    ReputationRep:
    (Original post by mynameisntbobk)
    Sorry guys, wanted to test out my latex
    please ignore this if you don't want to be insulted by it's level of difficulty
    Spoiler:
    Show

    1a. show that \[\int_{3}^{5}5x^4-2x +6 \] can be written as \[[x^5 - x + 6x]^5_{3}\]

    b. Hence or otherwise, solve \[\int_{3}^{5}5x^4-2x +6 \]
    Nice for a first try!

    (Original post by justinawe)
    I've been quite lazy over the last few days actually since my next exam is only on the 11th of June... need to get into gear :lol:

    I suspect I'll be doing less maths and more econ/physics though, as I'm already quite confident for my maths modules.
    Yeah me to, not doing enough!
    x=an integer which can be written as the sum of two square numbers \therefore x=a^2+b^2 where a and b are two square numbers

    \therefore 2^n x=2^n(a^2+b^2)=2a^n^+^2+2b^n^+^2 am I getting myself into an unnecessary mess?
 
 
 
  • 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
    What's your favourite Christmas sweets?
  • 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.