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    (Original post by Scientific Eye)
    I would have broken the six up from the first equation into (3 \times 2)^x^-^1 and then use the distributive property. The  2^x's cancel out after some manipulation, leaving you with just one number with an  x as an exponent.

    Then you can just take  \log_3 of both sides.
    Thank you I get it now, I made it more complex than it was the first time LOOL, also I didn't know you could split it up like that :')

    Ended up doing it now Thank you everyone
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    Lost marks on this question...

    Don't know where I went wrong...

    \int_{1}^{9} \frac{3}{\sqrt{5x+4}} dx

    I did:

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    (Original post by L'Evil Fish)
    Lost marks on this question...

    Don't know where I went wrong...

    \int_{1}^{9} \frac{3}{\sqrt{5x+4}} dx

    I did:

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    You multiplied by a half rather than dividing by a half.
    EDIT: When integrating that is
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    (Original post by joostan)
    You multiplied by a half rather than dividing by a half.
    Realised as soon as I posted! :rofl:

    Those were the only marks I lost ****ing shame :lol:
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    (Original post by L'Evil Fish)
    Realised as soon as I posted! :rofl:

    Those were the only marks I lost ****ing shame :lol:
    Haha - it's not the best way to lose marks.
    Spoiler:
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    I got 97% in my mechanics mock because I said 8/2 =2 so it could be worse :lol:
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    (Original post by joostan)
    Haha - it's not the best way to lose marks.
    Spoiler:
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    I got 97% in my mechanics mock because I said 8/2 =2 so it could be worse :lol:
    Damn, my UMS would have been... 94 if I gave myself 0/5 for it.

    :lol: unlucky

    I'm gonna make sure I scrutinize over everything
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    (Original post by L'Evil Fish)
    Damn, my UMS would have been... 94 if I gave myself 0/5 for it.

    :lol: unlucky

    I'm gonna make sure I scrutinize over everything
    The easiest check for integration questions is to differentiate and make sure get the same thing as before.
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    (Original post by L'Evil Fish)
    Damn, my UMS would have been... 94 if I gave myself 0/5 for it.

    :lol: unlucky

    I'm gonna make sure I scrutinize over everything
    I'm such a noob at times
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    (Original post by joostan)
    Haha - it's not the best way to lose marks.
    Spoiler:
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    I got 97% in my mechanics mock because I said 8/2 =2 so it could be worse :lol:
    Is there a good way to lose marks, though?
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    (Original post by justinawe)
    Is there a good way to lose marks, though?
    Not really, but there's a difference between not knowing the answer and just doing something stupid
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    (Original post by joostan)
    Not really, but there's a difference between not knowing the answer and just doing something stupid
    To be honest, I'd rather lose marks to something stupid than have to admit I was unable to solve an A-level question
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    (Original post by justinawe)
    To be honest, I'd rather lose marks to something stupid than have to admit I was unable to solve an A-level question
    True
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    Yeah, but a 6 year old could do that, if it came to it the way I'd like to lose marks if I had to, would be to make a minor algebraic slip or something.
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    Someone give me some lovely Maths to do, I'm sure I've seen some good questions being posted on here today but I'm not too sure which pages :-/
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    (Original post by MathsNerd1)
    Someone give me some lovely Maths to do, I'm sure I've seen some good questions being posted on here today but I'm not too sure which pages :-/
    Prove that, if a constant force acts on a body, then the work done by the force is equal to the change in kinetic energy of the body.
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    (Original post by Scientific Eye)
    The easiest check for integration questions is to differentiate and make sure get the same thing as before.
    Yeah, I did that and found why!
    (Original post by joostan)
    I'm such a noob at times
    You and me both :five:
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    (Original post by DJMayes)
    Prove that, if a constant force acts on a body, then the work done by the force is equal to the change in kinetic energy of the body.
    Hmm, I'm not sure with that as I'm not too strong in the Mechanics section but I'd probably start by drawing a diagram and going from there?
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    (Original post by MathsNerd1)
    Someone give me some lovely Maths to do, I'm sure I've seen some good questions being posted on here today but I'm not too sure which pages :-/
    There's one on 111, one on 113 and a logs one on 110 (I think.) For once you finish DJ's problem.
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    (Original post by joostan)
    There's one on 111, one on 113 and a logs one on 110 (I think.) For once you finish DJ's problem.
    Thanks and to be honest I can't really get anywhere with DJ's question as I'm not too confident in proving things in Mechanics :-/
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    (Original post by MathsNerd1)
    Thanks and to be honest I can't really get anywhere with DJ's question as I'm not too confident in proving things in Mechanics :-/
    Lol. Well those shouldn't keep you busy for long
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    (Original post by joostan)
    Lol. Well those shouldn't keep you busy for long
    Okay I'll post my answers on here to be checked? And right now I'm just checking the unofficial markscheme for the exam I sat so I know how many marks to be expecting in August, I'll start them in about 5-10 minutes, thanks
 
 
 
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