FP2 Mock Paper B: minor error in markscheme? Watch

ArchimedesSpiral
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Hi,

I've just completed Edexcel's Mock paper B for FP2 (new spec), and have come across what looks to me like an error in the markscheme n question 7(c)

I've attatched the question and the markscheme for the question. Basically, the method, as far as I can see, is, since we have an expression for v and know that y = vx, simply multiply v by x to get the expression for y. In the markscheme, they've done this for the complementary function (A cos 3x + B sin 3x), but NOT the particular integral (1/9x^2 - 2/81.) Since this is just a mock paper, and Edexcel tend to be a lot less careful about error checking these, I'm presuming this is just an omission, but wanted to check I was not missing some knowledge...

Thanks!
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ghostwalker
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(Original post by ArchimedesSpiral)
Hi,

I've just completed Edexcel's Mock paper B for FP2 (new spec), and have come across what looks to me like an error in the markscheme n question 7(c)

I've attatched the question and the markscheme for the question. Basically, the method, as far as I can see, is, since we have an expression for v and know that y = vx, simply multiply v by x to get the expression for y. In the markscheme, they've done this for the complementary function (A cos 3x + B sin 3x), but NOT the particular integral (1/9x^2 - 2/81.) Since this is just a mock paper, and Edexcel tend to be a lot less careful about error checking these, I'm presuming this is just an omission, but wanted to check I was not missing some knowledge...

Thanks!
And they managed to turn a cos into a sin in that last line as well,....

Yeah, it's an omission on their part.
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MichD-92
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could you post the whole mark scheme for this paper? Can't find it anywhere online.
Or if not it all, just question 8?
Thanks
Michelle
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ArchimedesSpiral
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I got the markscheme from this thread; scroll down and you should find the mark scheme for past paper B.
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bomberdoom
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Hey, what happened to papers C and D? Are there any?
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