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Edexcel A2 C3 Mathematics 12th June 2015

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Original post by danlocke
Seen a couple of these questions on Solomon papers. Here's a couple of them:





thats really weird, as nothing like that in the edexcel book and just checked the spec and its in there :/
Is alpha always = b/a
Original post by BioAgent
Is alpha always = b/a


yep I think so :smile:)
Original post by blueberry389
has anyone done the solomon papers?


I've done them. I don't know why everyone is making them out to be so hard they really aren't that bad. The only thing which might catch you out is the proof questions but they test understanding that you really should have.


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Original post by danlocke
Seen a couple of these questions on Solomon papers. Here's a couple of them:





So....
How do we do this?
Original post by danlocke
Seen a couple of these questions on Solomon papers. Here's a couple of them:





which solomon paper is this from ?
Original post by Maths degree
thats really weird, as nothing like that in the edexcel book and just checked the spec and its in there :/


Oh yes, so it does! I could have sworn it didn't but just checked it again. Thanks for that!
To quote the specification:

"Methods of proof, including proof by contradiction and disproof by counter-example, are required. At least one question on the paper will require the use of proof."
(edited 8 years ago)
Original post by Emmi12345
Oh yes, so it does! I could have sworn it didn't but just checked it again. Thanks for that!
To quote the specification:

"Methods of proof, including proof by contradiction and disproof bycounter-example, are required. At least one question on the paperwill require the use of proof."


It got removed according to my teacher, they just didn't update the spec

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ImageUploadedByStudent Room1433959145.284562.jpg here's my working for the second one


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Original post by tajanamckenzie
omeone help! ok so with the Rcos(x+a) for example and say you find out a and cos then it says work out the minimum value and the smallest possible value of x? Also for when it asks for the maximum and greatest possible value???? and what about for sine graph??? please help


The maximum value of Rcos(x + a) is always = to R
They may then ask you to work out x but cos(x + a) must = 1 if its a maximum value
Original post by samb1234
It got removed according to my teacher, they just didn't update the spec

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Ah ok, thanks! :smile: Getting very confused here... although I know how to go about it anyway, so it doesn't matter too much.
I have this evening and tomorrow to do papers, which ones should I do?
Original post by HappyHumanist
I have this evening and tomorrow to do papers, which ones should I do?


I would do the most recent ones as they are more challenging, remember if you get stuck, use exam solutions :----)
Original post by HappyHumanist
I have this evening and tomorrow to do papers, which ones should I do?


Start off with the 2007 as a warm up then jump to 2012 and work your way down.You can do it!


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Original post by Medicjug
Start off with the 2007 as a warm up then jump to 2012 and work your way down.You can do it!


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Challenge accepted
Anyone know what 100UMS was on the notorious June 2013 paper?
How do you differentiate sec^2?
https://07a69ccf283966549a9350d1a66951a7bc96e2dc.googledrive.com/host/0B1ZiqBksUHNYZ0JQM1NRcmdHdXM/June%202005%20QP%20-%20C3%20Edexcel.pdf
Hey, for 5d - can someone please help me understand why we don't use -3/4?
Original post by Gilo98
Anyone know what 100UMS was on the notorious June 2013 paper?


I heard you could drop 16 marks and get full ums


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Original post by Elliemay97
How do you differentiate sec^2?


write it as (secx)2 and use the chain rule

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