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    (Original post by usycool1)
    Yeah.
    Hi

    was that integrating or differentiating /?
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    I'm scared.
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    (Original post by Knoyle quiah)
    how do we know the limits for the last part of this question?? I thought you just find t value when x=1 and then when x=2.5, why am I wrong????
    is the answer to this either 3/8 or
    ln(1/4) -27/8 by any chance?
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    hey is it worth going through soloman papers this late?
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    (Original post by otrivine)
    Hi

    was that integrating or differentiating /?
    Integrating
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    Was this leaked like [the paper which shall not be named]?
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    guys, ive given up
    ive done 0 revison for c4
    i cant understand any of it
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    Anyone got a list of all the volume/areas of shapes we need to know?
    For questions like rates of change etc
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    (Original post by vengeance111)
    guys, ive given up
    ive done 0 revison for c4
    i cant understand any of it
    How can you give up revising if you never started?
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    (Original post by DonkBets)
    is the answer to this either 3/8 or
    ln(1/4) -27/8 by any chance?

    Sorry not them, cant remember the answer now, but am pretty sure wasnt either of them, as i have put them in my calculator and remember not seeing them numbers
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    (Original post by usycool1)
    Integrating
    Can I integrate using the sub method?

    or can I use integral sign , a^x/Ina +C ?
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    (Original post by vengeance111)
    guys, ive given up
    ive done 0 revison for c4
    i cant understand any of it
    Same here! It's seems to get harder by the day.
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    Has anyone come across the error of estimate ..how do you calculate that thanks in advance

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    (Original post by Knoyle quiah)
    Sorry not them, cant remember the answer now, but am pretty sure wasnt either of them, as i have put them in my calculator and remember not seeing them numbers
    do you know what book that question is from or where i would be able to find the answer?
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    (Original post by kuku2013)
    hey is it worth going through soloman papers this late?
    I started today. I think its better than nothing

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    (Original post by noeliah4)
    Has anyone come across the error of estimate ..how do you calculate that thanks in advance

    Posted from TSR Mobile
    (original estimate - Real value)/ Real value

    your on about calculation error aren't you?
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    (Original post by usycool1)
    Yeah.
    I got up to integrate 1/4+u * 2u . du am I along the right lines?
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    I've just a fall out with my notes, was fine this morning now just seem to not even be able to do Binomial expansion
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    (Original post by Knoyle quiah)
    Sorry not them, cant remember the answer now, but am pretty sure wasnt either of them, as i have put them in my calculator and remember not seeing them numbers
    I was going through what I believe is this question today with my teacher (edexcel c4 textbook, review exercise, question 74) A) the diagram in the book is wrong, it should cross the x axis at (2,0) NOT 1,0 as it shows. B) I'm terrible at explaining, but the limits you use are the t values from part a) , 0.5 and 2. The explanation was something like all the values given, t is an increasing value, as shown in part b, so you are integrating the t values and you disregard the (x,y) graph. Hope that helped. ps, I've done all the past papers and have never seen a question like it
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    (Original post by excal9)
    I was going through what I believe is this question today with my teacher (edexcel c4 textbook, review exercise, question 74) A) the diagram in the book is wrong, it should cross the x axis at (2,0) NOT 1,0 as it shows. B) I'm terrible at explaining, but the limits you use are the t values from part a) , 0.5 and 2. The explanation was something like all the values given, t is an increasing value, as shown in part b, so you are integrating the t values and you disregard the (x,y) graph. Hope that helped. ps, I've done all the past papers and have never seen a question like it
    i used the limits 2 and 0.5 too, but my answer was wrong.
 
 
 
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