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    (Original post by tigerz)
    C2 people,
    I don't understand this at all! Where did cos come from? I only know that sin²x=1-cos²x could someone explain please?

    Attachment 217790

    Can A2 skills solve this mystery? :dontknow:
    (Original post by MathsNerd1)
    e^\frac{3i\pi}{2}
    (Original post by DJMayes)
    \dfrac{1}{1}=1
    Can you have a look at this please? I know what I'd do to answer the Q but the markscheme seems confusing
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    (Original post by reubenkinara)
    Can you have a look at this please? I know what I'd do to answer the Q but the markscheme seems confusing
    Which part? The first or second part?


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    Oh gosh, i've managed to confuse quite a few people with this question, its 9 marks so I tried to do it but clearly failed, hopefully someone on here can solve it!

    Thank you reubenkinara
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    (Original post by MathsNerd1)
    Which part? The first or second part?


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    I might need to actually do it. I just thought that for a C2 Q the answer would be instantly apparent. Can you help the OP?
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    (Original post by tigerz)
    Oh gosh, i've managed to confuse quite a few people with this question, its 9 marks so I tried to do it but clearly failed, hopefully someone on here can solve it!

    Thank you
    Well this seems more of something that would arise in C3 but basically expand the 2 formulas and then let A+B = X and A-B = Y so to eliminate B just add them together and divide by 2 and then do the same to get B which you then sub in when you add the 2 formulas together.


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    (Original post by reubenkinara)
    I might need to actually do it. I just thought that for a C2 Q the answer would be instantly apparent. Can you help the OP?
    I feel like I have but it just seems not what you'd see in C2, I see that in C3 instead.


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    (Original post by MathsNerd1)
    I feel like I have but it just seems not what you'd see in C2, I see that in C3 instead.


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    I thought so too. I'm going to do it on paper now
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    (Original post by reubenkinara)
    I thought so too. I'm going to do it on paper now
    (Original post by MathsNerd1)
    I feel like I have but it just seems not what you'd see in C2, I see that in C3 instead.


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    Yeah, a few people have said that now, I think its from the old c2 spec, I always manage to find the dodgiest papers :cyber:
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    (Original post by reubenkinara)
    I thought so too. I'm going to do it on paper now
    Okay, I'm trying to do it in my head to see how far I get


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    (Original post by tigerz)
    Yeah, a few people have said that now, I think its from the old c2 spec, I always manage to find the dodgiest papers :cyber:
    Which year was it?


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    (Original post by MathsNerd1)
    Okay, I'm trying to do it in my head to see how far I get


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    The last part is a bit puzzling. I think now that the 0s must be \theta s
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    (Original post by reubenkinara)
    The last part is a bit puzzling. I think now that the 0s must be \theta s
    Yeah, I'd take that assumption too.


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    (Original post by MathsNerd1)
    Which year was it?


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    Its a c2 practice paper heres a link

    (Original post by reubenkinara)
    The last part is a bit puzzling. I think now that the 0s must be \theta s
    OHH that makes sense lols I was so confused
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  1. File Type: doc c2 set a5.doc (311.0 KB, 42 views)
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    (Original post by L'Evil Fish)
    My C3 is this Friday. Haven't started.

    C4 is 13th June. Haven't started.

    So I hope not
    Youre naturally good at maths so youll be fine !!
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    (Original post by ljh950912)
    Does anyone know what the grade boundaries were so low for c2 in jan 2010?


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    Because of the circle question, the logs question and integration. I think the integration question was pretty easy though but the circle one was quite tough
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    (Original post by MathsNerd1)
    Best of luck with those exams, you'll smash them!


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    Thanks a lot

    Although I learnt the content "properly" (still haven't learnt religious beliefs on all) last night :yy: as it's a self taught module...

    So I'll do that third lesson.

    The other is business, which is common sense.

    C3 is 3 days :moon: I'll know whether the chance of an A* still exists then
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    (Original post by L'Evil Fish)
    Thanks a lot

    Although I learnt the content "properly" (still haven't learnt religious beliefs on all) last night :yy: as it's a self taught module...

    So I'll do that third lesson.

    The other is business, which is common sense.

    C3 is 3 days :moon: I'll know whether the chance of an A* still exists then
    Very nice, I couldn't leave my stuff to the night before, I'd be incredibly stressed if I did!

    Also if you put in the practice now you should still be able to get it, if not then maybe you should resit the A Level with a different board as universities are only bothered about the marks and grades you get, not that you did it early or anything. Good luck!!!


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    (Original post by MathsNerd1)
    Very nice, I couldn't leave my stuff to the night before, I'd be incredibly stressed if I did!

    Also if you put in the practice now you should still be able to get it, if not then maybe you should resit the A Level with a different board as universities are only bothered about the marks and grades you get, not that you did it early or anything. Good luck!!!


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    :mmm: I was stressed because I only got the book from my nans house yesterday!

    Hmmm... I'll try for it this time :yy:
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    (Original post by L'Evil Fish)
    :mmm: I was stressed because I only got the book from my nans house yesterday!

    Hmmm... I'll try for it this time :yy:
    My god, that's very last minute then! And I'm hoping come results day we'll both be celebrating our A*'s in Maths!


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    (Original post by MathsNerd1)
    My god, that's very last minute then! And I'm hoping come results day we'll both be celebrating our A*'s in Maths!


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    I hope you do get an A*, you deserve it
 
 
 
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