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Edexcel Maths calc tommorow watch

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    I reckon that on the higher paper we WILL get the following question because it's been on the syllabus for the past 5 years or something and never come up:

    Proove the quadratic formula.

    Here goes...

    ax2+bx+c=0
    ax2+bx=-c
    x2+bx/a=-c/a
    (x+b/2a)2-b2/4a2=-c/a (That bit is completing the square)
    (x+b/2a)2=(-4ac+b2)/4a2
    x+b/2a=(+ or - √(b2-4ac))/√(4a2)
    Therefore, x=(-b + or - √(b2-4ac))/2a

    There you go! a (probably pointless) bit of algebra that HAD BETTER COME UP :mad: otherwise I will shoot myself
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    (Original post by GiBB*)
    meh doing intermediate maths and im worried..
    the mocks were OK for me I got a B but because of last weeks paper im not feeling so confident
    What is the boundary for a B on the intermediate tier anyway?
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    (Original post by StriatedCentipe)
    I reckon that on the higher paper we WILL get the following question because it's been on the syllabus for the past 5 years or something and never come up:

    Proove the quadratic formula.

    Here goes...

    ax2+bx+c=0
    ax2+bx=-c
    x2+bx/a=-c/a
    (x+b/2a)2-b2/4a2=-c/a (That bit is completing the square)
    (x+b/2a)2=(-4ac+b2)/4a2
    x+b/2a=(+ or - √(b2-4ac))/√(4a2)
    Therefore, x=(-b + or - √(b2-4ac))/2a

    There you go! a (probably pointless) bit of algebra that HAD BETTER COME UP :mad: otherwise I will shoot myself
    im sorry to tell u this but its guaranteed that no way is that question question is not going to come up.
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    i've got Edexcel Maths Higher Tier tomorrow. i need a minimum of a grade A to do AS Further Maths, but im determined to get an A*. Good Luck to every1!!!!!
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    Good luck everyone, I sure hope it is straight forward.

    :tsr:
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    Good Luck to all. I am aiming for a B in this subject, it's my worst!
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    Does standard deviation still come up or has that moved to statistics??? I'm doing June 2001 past paper but we did standard deviation in cw so can it come up on the exam?
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    yes standard deviation can come up.all the statistics didnt come up on non calculator and will come up on calculator one.****!!!!lol
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    Probably a histogram on the higher paper one has come up on either paper for the past 6 years...
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    (Original post by StriatedCentipe)
    I reckon that on the higher paper we WILL get the following question because it's been on the syllabus for the past 5 years or something and never come up:

    Proove the quadratic formula.

    Here goes...

    ax2+bx+c=0
    ax2+bx=-c
    x2+bx/a=-c/a
    (x+b/2a)2-b2/4a2=-c/a (That bit is completing the square)
    (x+b/2a)2=(-4ac+b2)/4a2
    x+b/2a=(+ or - √(b2-4ac))/√(4a2)
    Therefore, x=(-b + or - √(b2-4ac))/2a

    There you go! a (probably pointless) bit of algebra that HAD BETTER COME UP :mad: otherwise I will shoot myself
    what the hell?

    Poeple have no f*cking clue how to do that. No way, NO WAY is that coming up. ( our set 1, in a grammar school, which gets 90-100% A* at maths (in set1)), couldn't get that without memorising the whole thing. (or at least the technique of CTS with algebra)
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    You get given the quadratic formula on a data sheet so it should be no problem wouldm't be there if they don't expect you to know how to use it.
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    Standard form also seems likely as it didn't appear on the other paper and could come up. http://www.gcsemathspastpapers.com/Fav-Qs.htm a great site.
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    I'm actually hoping that this exam is more difficult than the non-calc. . I'd rather get a mark that I would feel I'd achieved, rather one that is much higher but a false representation of my ability. Still, I want that A* a lot!

    Michael
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    standard deivation is no longer on the gcse sylabus well not for maths anyway deffo not,statistics yeh but not 2mmo's maths they swapped it for that stupidly hard sim equation at the end of the exam....6 marks or so...its mad!

    rgrds
 
 
 
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