Edexcel A2 C3 Mathematics 12th June 2015 Watch

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Alex Basso
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#3041
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#3041
You're a ****
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Ripper Phoenix
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#3042
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#3042
(Original post by Freddy-Francis)
i worked out second deriative and left it :/
1 mark?
you dont have to do all that!

you are told k is negative and its an assymptotic graph so you just sketch it you will see
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MrBowcat
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#3043
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#3043
(Original post by Ripper Phoenix)
that video is private i cant access it
The guy must've taken it down because it was just poor.
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xyzmaster
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#3044
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#3044
(Original post by xKay)
Its actually increasing
Correcting the fuhrer. Bad Mistake
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Adamjs16
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#3045
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#3045
What does everyone think on whether it was harder than June 2013. As I found it a lot harder. Sometime needs to create a poll for that to.
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harrisondg
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#3046
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#3046
looooool cant believe your responses this was a piece of piss
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iceangel8
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#3047
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#3047
So I can do the difficult range question but do a sign error so get the coordinates of A wrong by calculating the gradient wrong and missed a solution for one of the trig equations! grrrrrrrr
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dominicwild
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#3048
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(Original post by xKay)
Its actually increasing
How did you get it to be increasing?

K was negative and it was divided by the square of some function of x. Meaning the gradient at any point could only be negative. As it's always going to be negative/positive = negative. Meaning it's a decreasing function?
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harrisondg
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#3049
(Original post by Johann von Gauss)
Prove: sex 2x + tan 2x = (cos x + sin x) / (cos x - sin x)
Spoiler:
Show
LHS = 1/cos 2x + 2tanx/(1-tan^2 x)
= 1 / (cos^2 x - sin^2 x) + 2sinxcosx / (cos^2 x - sin^2 x)
= (1 + 2sinxcosx) / (sin^2 x + cos^2 x)
= (sin^2 x + 2sinxcosx + cos^2 x) / (cos^2 x - sin^2 x)
= (sin x + cos x)^2 / (cos^2 x - sin^2 x) = (cos x + sin x) / (cos x - sin x)QED
wrong u dummy
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xyzmaster
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#3050
(Original post by PhysicsFiend)
About the asymptote - http://www.wolframalpha.com/input/?i=y%3D%282e%5Ex%29-5

See the range, it should be y=-5 for f(x) and y=5 for |f(x)|
Not y=5
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kprime2
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(Original post by Navakiza)
I genuinely think that this was a difficult paper, there was a lot in there that stretched people's knowledge and I think that will show in the grade boundaries. We're forgetting that the boundaries are set by how people have done overall, if a lot of people think they've done badly then the boundaries will reflect that.
I would agree it was trickier compared to previous years papers (except June 13 which was harder by miles). All I'm saying is that there was nothing on that paper which would have thrown a well prepared candidate off. My further maths class found it to be a reasonable paper.
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sara_ara98
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#3052
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#3052
(Original post by AJeeeee)
im sorry, wasnt my intention
hahahha its okayy
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Ripper Phoenix
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#3053
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#3053
(Original post by Emmi12345)
Attachment 426305

There you go. Die no more.
why have you worked from right to left? is that even allowed? i thought its always prove left to right
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LMottram
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#3054
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#3054
Is Arsey doing a mark scheme? Haven't heard anything from him
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harrisondg
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(Original post by iceangel8)
So I can do the difficult range question but do a sign error so get the coordinates of A wrong by calculating the gradient wrong and missed a solution for one of the trig equations! grrrrrrrr
growl all you want YOU ARE STILL A DUMMY
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thatNoseyParker
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#3056
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#3056
(Original post by anonwinner)
What did everyone get for question 10 part a? I nearly missed the entire question because it was on the last page so I only had 5 mins to do it!
Just another copycat troll, sad really..
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randymarsh
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#3057
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#3057
How long ARSEEYYYY im sitting here refreshing wait 4 uuuu x
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Hanif Ahmed
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#3058
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#3058
There was 10...on the last page after the division question
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Bustamove
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(Original post by kprime2)
Well the point of the thread is for people to give their opinions about how they found the paper. We don't slack people when they say they found it really difficult, so then why do we do slack people when they find it easy?

Some people will do good, some will do bad. That's the nature of exams. A person who did good should have every right to boast about their exam as someone who did bad and complains.
I have nothing against people saying that they did well, but making fun of others not doing as well as you is not something that I agree with...
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Ripper Phoenix
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#3060
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#3060
theyre out!
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