[a10]

(Original post by samjj8)
'They can't make a D1 paper off topic they said'

Off topic my arse!

hahahaha were did u read this of?

[a10]

(Original post by Nathdragon5)
No, that's for a different question, that was the one with the route covering every arc, agree with you though we're talking about the one where she had to go to every node, which you'd use nearest neighbour for..... I think, anyway :P

oops my bad :P n ohh yeahh that was route inspection or chinese postman. fight the odd nodes pair em up then add the smallest weight to the total weight xD so i think we are right

[Nathdragon5]

(Original post by a10)
oops my bad :P n ohh yeahh that was route inspection or chinese postman. fight the odd nodes pair em up then add the smallest weight to the total weight xD so i think we are right

Damn straight we're right xD

[a10]

(Original post by Nathdragon5)
Yeah, a little :L Ahh okay, that sounds a lot nicer, gets you into the flow of things okay, I've done d2, that went fine, usually they're really time pressured but this was okay, I think I lost 2 marks last time I checked the unofficial mark scheme. It was pretty easy, and its easy to learn, only 5 chapters, and there's really not much complication. M1 is next Thursday and m2 is my last exam, 22nd June -_- I'll tell you how they go. If you've done m1 I would probably recommend learning m2 over the summer, the first part of it is easy, the rest was a little confusing but its one of those modules that suddenly just clicks and you understand everything :P which is nice an AA is good, that would get you far! Just for Cambridge they said that the average ums score of people actually there is 95 so that's what I'm aiming for

dont listen to that average score bull**** its just over estimating and ****kk me you do 7 a levels???! Jesus i thought 4 was enough on your hands but 7 omg dont mean this in an offensive way but do you have a good social life?? Im doing 3 a levels Maths, Physics n Computing! I did chemistry in my 1st year failed that i hated it and it wasnt a subject for me tbh

[Nathdragon5]

(Original post by a10)
dont listen to that average score bull**** its just over estimating and ****kk me you do 7 a levels???! Jesus i thought 4 was enough on your hands but 7 omg dont mean this in an offensive way but do you have a good social life?? Im doing 3 a levels Maths, Physics n Computing! I did chemistry in my 1st year failed that i hated it and it wasnt a subject for me tbh

Haha yeah, it seems like a good thing to aim for anyway, I'm on 95 so far so alls good, although that's just C1 and wait, I think we have a misunderstanding here I'm doing my AS. I do 7 maths modules, which is for my maths and further maths and then I also do history and physics so I do 4 as levels. Not 7 and therefore yeah, I do, definitely wouldn't if I did 7 though xD Ahh yeah, chemistry is really really hard apparently

[a10]

(Original post by Nathdragon5)
Haha yeah, it seems like a good thing to aim for anyway, I'm on 95 so far so alls good, although that's just C1 and wait, I think we have a misunderstanding here I'm doing my AS. I do 7 maths modules, which is for my maths and further maths and then I also do history and physics so I do 4 as levels. Not 7 and therefore yeah, I do, definitely wouldn't if I did 7 though xD Ahh yeah, chemistry is really really hard apparently

Ohhhhhhh hahaha thats okay then xD i will drop computing because 2nd year is hard for that and its kinda like coursework and i hate coursework subjects...i was thinking of picking FM but im not sure i want something relaxed in my 3rd year im in my 2nd year now and finish maths this year resat c1,c2 n d1 want to get an A* or an A in maths c1 was a bad day got 79% c2 exam went superb think i only droped 4-5 marks d1 well i just hope i did good hahaha...if i get 96% in c2 then i will only need to get like 65% in this d1 exam and iv already got 80% for my first year modules. Iv got m1 next thursday and c4 on 21st of june not very good at m1 but im working on it this week till the exam and c4 i like it a lot more than i did c3. Got 53% on c3 ( but thats not a problem because if i do good in m1 like high 70s and get 90 in c4 to get the A* i would then need to just resit c3 at my own pace wich will be totally fine)

[Bless3d]

(Original post by a10)
dont listen to that average score bull**** its just over estimating and ****kk me you do 7 a levels???! Jesus i thought 4 was enough on your hands but 7 omg dont mean this in an offensive way but do you have a good social life?? Im doing 3 a levels Maths, Physics n Computing! I did chemistry in my 1st year failed that i hated it and it wasnt a subject for me tbh

it's really not. It's been statistically shown that if you have an 88% Average UMS when applying, your chance of getting an offer is 1/40. If it's 95% it's 3/4. So not to say that if you don't have 95% you won't get in, of course you still can. It's just that your chances decrease exponentially.

Just apply to oxford if you're concerned, they don't look at UMS scores.

[kofanov]

January 2012 D1 pass points: 37
January 2011 D1 pass points: 26
June 2010 D1 pass points: 22

What is the pass point going to be this time??

[kofanov]

(Original post by Riyaz1)
The Jan 2012 paper was a lot more fair even though the grade boundaries were high. I just didn't have enough time to attempt the last question today. 3 marks for one iteration? You're having a laugh

same.. I haven't even done question 6 at all. Today when I saw it, I regretted it so much!!!! Question 6 is so easy to compare to question 5...

[bigsam]

anyone got the paper?

[kofanov]

(Original post by bigsam)
anyone got the paper?

I have it

[bigsam]

will you put it up?

[Snowdog94]

(Original post by Bless3d)
it's really not. It's been statistically shown that if you have an 88% Average UMS when applying, your chance of getting an offer is 1/40. If it's 95% it's 3/4. So not to say that if you don't have 95% you won't get in, of course you still can. It's just that your chances decrease exponentially.

Just apply to oxford if you're concerned, they don't look at UMS scores.

Interesting statistics, referring to Maths UMS or grouped relevant subject UMS? Source, if possible? Thank you.

[cmcjas]

(Original post by Nathdragon5)
Yeah, a little :L Ahh okay, that sounds a lot nicer, gets you into the flow of things okay, I've done d2, that went fine, usually they're really time pressured but this was okay, I think I lost 2 marks last time I checked the unofficial mark scheme. It was pretty easy, and its easy to learn, only 5 chapters, and there's really not much complication. M1 is next Thursday and m2 is my last exam, 22nd June -_- I'll tell you how they go. If you've done m1 I would probably recommend learning m2 over the summer, the first part of it is easy, the rest was a little confusing but its one of those modules that suddenly just clicks and you understand everything :P which is nice an AA is good, that would get you far! Just for Cambridge they said that the average ums score of people actually there is 95 so that's what I'm aiming for

thanks for the info no i have not done any mechanics yet, but i think we are going to start d2, m1 and fp1 next. and good luck to your exams

[dekg140]

Any chance of someone getting the paper? I'd love to see exactly how many marks they killed my C1 and C2 efforts by -_-

[StaceyA]

ive got the actual exam paper here if anyone wants me to post it and we can make an unofficial mark scheme...

[dekg140]

(Original post by StaceyA)
ive got the actual exam paper here if anyone wants me to post it and we can make an unofficial mark scheme...

yeah post it if you can please

[ryanrandom]

Clicky.

[StaceyA]

1i) use the map to construct a network with exactly 10 arcs to show the distances between these places with no road junctions.
ii) apply Dijkstra algorithm, starting at node a to find the shortest route from A-F
Dijkstra is quadratic order (n^2)
iii)if it takes 3 seconds to find the shortest route between two areas if it has to process 200 places, calculate how many minutes it will take to process 4000 places.

2i)draw a simply connected eulerian graph with 5 vertices and 5 arcs
ib) draw a simply connected semi-eulerian graph with 5 vertices 5 arcs and one node order 4.
ic) draw a simply connected semi eulerian graph with 5 vertices and 5 arcs in which non have order 4.
iia) draw a graph to show the table each arc links the two classes chosen by one person
iib) show how the teacher can arrange classes in 2 sessions, which satisfy all student choices

3i) obtain the four inequalities that define the feasible region
ii) calculate the coordinates of the vertices of the feasible region giving your values as fractions
iii) p=X+ 4Y calculate the value of P at each vertex of the feasible region. hence write down the coordinates of the optimal point and the optimal value of P.
iv) find the coordinates of the optimal point with the integer valued x and y and the corresponding value of p. explain how you know that this is the optimal solution.

4) maximise p= -5x-6y+4z
subject to 3x-4y+z<(or equal to) 12
6x+2z<(or equal to) 20
-10-5y+5z<(or equal to) 30
all must be bigger than or equal to 0
i) use slack variables stu to re write the first 3 constraints as equations, what restrictions are on stu
ii) represent the problem as an initial simplex tableau
iii) show why the pivot for the first iteration of the simplex algorithm must be the coef of z in the third constraints
iv) perform one iteration of the algorithm showing how the elements of the pivot row were calculated and how this was used to calculate the other rows.
v) perform a second iteration of the simplex algorithm and record values of x y z and p at the end of this iteration
vi) write down the values of s t u from your final tableau and explain what they mean in terms of the original constraints.

5i) use a standard algorithm to find the shortest distance that Jess must travel to cover every arc in the original network starting and ending at M
ii) find the shortest distance that Jess must travel if she just wants to cover every arc but does not mind where she starts or finishes. what are her start and finish points.
iii) apply nearest neighbor to the network starting at m to write down a closed tour through all vertices. calculate the weight. what does this tell you about the shortest length closed route that passes through every vertex.
iv) use kruscals on Henry list to find a minimum spanning tree for m n p r s t v. draw the tree
V) use the weight for minimum spanning tree to find lower bound that uses all 8 vertices w is special.

61) work through when x=0
ii) x=1
iii) x=-1
iv) identify a problem with this algorithm





cant put the diagrams in but...

[bigsam]

thanks, how many marks per question?