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    (Original post by lizard54142)
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    (Original post by poorform)
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    Either of you taking further maths or sure you'll get an A* overall in maths?

    I would love some tips and stuff. Studying this thing alone, self teaching home schooled.
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    (Original post by QueenAryela)
    Either of you taking further maths or sure you'll get an A* overall in maths?

    I would love some tips and stuff. Studying this thing alone, self teaching home schooled.
    I'm self teaching A2 Further Maths, I believe poorform is an undergrad (correct me if I'm wrong!).

    What do you struggle with in C3?
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    (Original post by lizard54142)
    I'm self teaching A2 Further Maths, I believe poorform is an undergrad (correct me if I'm wrong!).

    What do you struggle with in C3?
    PM me please x
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    (Original post by lizard54142)
    I'm self teaching A2 Further Maths, I believe poorform is an undergrad (correct me if I'm wrong!).

    What do you struggle with in C3?
    Yes I am an undergrad only finished year one a couple of weeks ago.

    (Original post by QueenAryela)
    PM me please x
    Post any problems and there are lots of people who are willing to help
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    (Original post by poorform)
    Yes I am an undergrad only finished year one a couple of weeks ago.


    Post any problems and there are lots of people who are willing to help
    Nice congrats on finishing your 1st year:awesome:

    What is the fastest way to minimise mistakes made in C3 whilst maintaining working pace? Its such an accident-prone unit for me


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    (Original post by Leechayy)
    Nice congrats on finishing your 1st year:awesome:

    What is the fastest way to minimise mistakes made in C3 whilst maintaining working pace? Its such an accident-prone unit for me


    Posted from TSR Mobile
    Thanks.

    Practice and checking I suppose. I still sometimes make stupid mistakes, but not as frequently as I used to. Just make sure you check the obvious things what are easily to make mistakes on. Checking whether your answer is reasonable is quite useful also say if you work through a question and you end up with a distance of 100000000 miles for example you may be a bit suspicious you've made a mistake.
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    I never know what rule to use when you integrating/differentiating any tips?
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    (Original post by Alevelstudent678)
    I never know what rule to use when you integrating/differentiating any tips?
    Differentiating:

    products-----product rule

    function of a function-----chain rule

    quotient-----quotient rule

    integration

    product----substitution/parts

    often you can inspect some integrals

    with more practice you will learn to spot which methods work/won't.

    Also learn all the standard results like integrals of ln(x) dx and derivative of tan x = sec^2(x) as these come up often.
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    okay cheers, when integrating how do you know what to use as u? or if you have to use u at all?
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    (Original post by poorform)
    Differentiating:

    products-----product rule

    function of a function-----chain rule

    quotient-----quotient rule

    integration

    product----substitution/parts

    often you can inspect some integrals

    with more practice you will learn to spot which methods work/won't.

    Also learn all the standard results like integrals of ln(x) dx and derivative of tan x = sec^2(x) as these come up often.
    What do you think are the most difficult elements of this unit?
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    (Original post by Alevelstudent678)
    okay cheers, when integrating how do you know what to use as u? or if you have to use u at all?
    Depends on the question really. I think they sometimes give you the substitutions at a level.

    If you had something like \displaystyle \int xe^{-x^2} ~dx then you should notice that since \displaystyle \frac{d}{dx} (x^2)=2x a appropriate substitution would be \displaystyle u=x^2} as it leads to some nice cancelling.

    This is often the case with integrals like \displaystyle \int sin(x)cos(x)~dx
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    (Original post by Alevelstudent678)
    I never know what rule to use when you integrating/differentiating any tips?
    Differentiating:

    fg(x) - chain rule


    \dfrac{f(x)}{g(x)} - quotient rule

    f(x)g(x) - product rule


    Integration:

    f(x)g(x) - integration by parts

    fg(x) - integration by substitution

    Obviously try and avoid parts at all costs, so try and see if you can do it by "recognition".
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    (Original post by Hody421)
    What do you think are the most difficult elements of this unit?
    hard to say really. I remember a lot of people having trouble with domains and ranges of inverse trig functions. But I think it varies person to person.
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    I would also recommend knowing that \displaystyle \int ln(x)~dx is evaluated by using parts and re-writing the integral as \displaystyle \int 1 \cdot ln(x)~dx.
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    Is anyone going to section B first? I'm really tempted to because I don't want to be rushing the challenging questions at the end of section B.
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    http://www.mei.org.uk/files/papers/c310ja_4753.pdf
    Anyhelp please. I dont know how to do 8(i) .
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    (Original post by Velocity_)
    http://www.mei.org.uk/files/papers/c310ja_4753.pdf
    Anyhelp please. I dont know how to do 8(i) .
    At P and Q y=0, and x>0. You have to consider the period of cos3x
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    (Original post by Velocity_)
    http://www.mei.org.uk/files/papers/c310ja_4753.pdf
    Anyhelp please. I dont know how to do 8(i) .
    xcos3x = 0 since y=0 is how you find x-intersections
    cox3x = 0 (divide x by both sides)

    The cos graph intersects the x axis at 90 degrees and 270 degrees. cos3x means squashing the x values by scale factor 1/3 so 90/3 = 30 and 270/3.

    Convert to radians, 30 degrees equals to pi/6 and 90 degrees equals pi/2.

    Answer is in radians because you can't express co-ordinates in terms of degrees and it seems odd.
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    What resources are people using to revise? I really hate the textbook so if anyone knows any good websites or youtube channels it would be much appreciated
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    (Original post by AnnaLouii)
    What resources are people using to revise? I really hate the textbook so if anyone knows any good websites or youtube channels it would be much appreciated
    I recommend using past papers and just doing as many question as possible before the exam. Focus on areas you are stuck on. Good luck.
 
 
 
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