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    Hi everyone,
    I just thought I'll make a thread for core four, as I could not find any.
    I hope it helps anyone with core four ( even me) if there are any questions just post.

    Minnie me
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    I genually cannot write/set up a differential equation when they give you a pieces of info and asked to use a constant K :/


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    (Original post by Gary)
    I genually cannot write/set up a differential equation when they give you a pieces of info and asked to use a constant K :/


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    Hi,
    Thanks for posting.
    I've attached some core four revision notes, which may help yo. If your still stuck just post.

    Me
    Attached Images
  1. File Type: pdf C4-1.pdf (363.4 KB, 427 views)
  2. File Type: pdf Core 4 AQA Revision Notes.pdf (271.2 KB, 477 views)
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    (Original post by Minnie me)
    Hi,
    Thanks for posting.
    I've attached some core four revision notes, which may help yo. If your still stuck just post.

    Me
    Thanks for those!

    Out of curiosity, What grade you aiming for in maths?


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    (Original post by Gary)
    Thanks for those!

    Out of curiosity, What grade you aiming for in maths?


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    Hi,
    I'm aiming for B, but I'll see how I do in my mock tomorrow.
    How about yourself
    Me
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    Hi,
    I have a question, I'm stuck on question 2(b) on the Jan12 c4 paper.
    I can't seem to get it in the form
    (m square root 3 minus n) / (n square root 3 + m)

    Please help anyone

    Thanks very much
    Me
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    (Original post by Minnie me)
    Hi,
    I have a question, I'm stuck on question 2(b) on the Jan12 c4 paper.
    I can't seem to get it in the form
    (m square root 3 minus n) / (n square root 3 + m)

    Please help anyone

    Thanks very much
    Me
    Ah yes I remember that question (did core 4 in Jan 13) as part of my revision. Try multiplying both numerator and denominator by 3sqrt3.
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    (Original post by thers)
    Ah yes I remember that question (did core 4 in Jan 13) as part of my revision. Try multiplying both numerator and denominator by 3sqrt3.
    Hi
    Thanks for helping, but why do we multiply both numerator and denominator by 3sqrt3. Here is a picture to try and help explain.
    Name:  Camera(28).jpg
Views: 342
Size:  136.7 KB

    Me
    Ps sorry pic is upside down.
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    (Original post by Minnie me)
    Hi
    Thanks for helping, but why do we multiply both numerator and denominator by 3sqrt3. Here is a picture to try and help explain.
    Name:  Camera(28).jpg
Views: 342
Size:  136.7 KB

    Me
    Ps sorry pic is upside down.
    Hope this helps:

    Name:  ImageUploadedByStudent Room1369783843.464547.jpg
Views: 292
Size:  56.7 KB


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    Name:  Camera(29).jpg
Views: 280
Size:  175.1 KB Hey
    Thanks but …


    Me


    (Original post by fizzbizz)
    Hope this helps:

    Name:  ImageUploadedByStudent Room1369783843.464547.jpg
Views: 292
Size:  56.7 KB


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    (Original post by Minnie me)
    Name:  Camera(29).jpg
Views: 280
Size:  175.1 KB Hey
    Thanks but …


    Me
    How'd you mean? I didn't use that identity in the picture, its just manipulating the fraction to the required form
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    (Original post by Minnie me)
    Name:  Camera(29).jpg
Views: 280
Size:  175.1 KB Hey
    Thanks but …


    Me
    (Original post by fizzbizz)
    How'd you mean? I didn't use that identity in the picture, its just manipulating the fraction to the required form
    Okay so the identity was used, but you get tanB= -1/root3
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    (Original post by Minnie me)
    Hi,
    I have a question, I'm stuck on question 2(b) on the Jan12 c4 paper.
    I can't seem to get it in the form
    (m square root 3 minus n) / (n square root 3 + m)

    Please help anyone

    Thanks very much
    Me
    I just did this paper today and i dont get why 2a ii) is -1/ root3 and not 1/root 3
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    (Original post by Gary)
    I just did this paper today and i dont get why 2a ii) is -1/ root3 and not 1/root 3
    The question says the angle is obtuse, so if you look at the tan curve, +1/root3 gives acute angles and -1/root3 gives obtuse
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    (Original post by Minnie me)
    Hi,
    Thanks for posting.
    I've attached some core four revision notes, which may help yo. If your still stuck just post.

    Me
    These are amazing do you have some for c3?
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    (Original post by wsaqed)
    These are amazing do you have some for c3?
    Hi,
    I'm glad you have found them useful.
    Here are all the core three notes I have

    Me
    Attached Images
  3. File Type: pdf C3.pdf (238.3 KB, 335 views)
  4. File Type: pdf Core 3 AQA Revision Notes.pdf (368.9 KB, 182 views)
  5. File Type: pdf Core 3 revision notes.pdf (32.8 KB, 207 views)
  6. Attached Files
  7. File Type: doc Core 3 Revision Sheet.doc (236.5 KB, 118 views)
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    Hi,
    Core 3 help
    Can anyone help me with question 3 of the Jan 10 paper, I seem to get every value expect 3.39
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    (Original post by Minnie me)
    Hi,
    Core 3 help
    Can anyone help me with question 3 of the Jan 10 paper, I seem to get every value expect 3.39
    Did you get:

    cosec^2x+cosecx-12=0



(\mathrm{cosec} x+4)(\mathrm{cosec} x-3)=0
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    (Original post by SherlockHolmes)
    Did you get:<br />
    <br />
    cosec^2x+cosecx-12=0&lt;br /&gt;

&lt;br /&gt;

(\mathrm{cosec} x+4)(\mathrm{cosec} x-3)=0&lt;br /&gt;
    <br />
    <br />

    Oh no worries, I have worked out my error

    Thanks anyways

    Me.
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    Guys can we move discussion about the C4 exam to this thread

    http://www.thestudentroom.co.uk/show....php?t=2285046

    It was started earlier and so has more pages. No point having two threads about the same exam- why not share everything in one place
 
 
 
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