Competition - post a photo you've taken of nature >>

Oxford MAT 2013/2014

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for no.2 obviously thats in another paper. for number 3 you havent done yet,

for number 4 i agree with ur parts i,ii,iii. on the last part i agree wit ur coord wer the max value occurs and that its 1. but u also need to find the minimum value which i got to be (1/sqrt2) at ({+or-}0.5,{+or-}0.5)

numberr 5 i dont get -.-

Hey, can you please check with my answers as well? They'll be in a post a page or two back, I think.

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Reply 641

IceKidd

Original post by souktik

Err, can you please remind me what the question was?

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here u go

ur probably right btw

OFMAT.jpg47.8KB

Reply 642

IceKidd

Original post by yl95

IceKidd, are you an international applicant?

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Naa right here from West LonDoN. wbu;?

Reply 643

Noble.

Original post by IceKidd

here u go

ur probably right btw

It's not (d) because then (ii) is also true contradicting there only being two true statements.

Reply 644

IceKidd

Original post by souktik

Does anyone else feel that the "-" between c and 1/c in the first line of problem 3 actually be a "+"?

Anyway, here are some of the answers - I'm not writing any solutions or proofs here - that I got:

Spoiler

we already discussed number 1. you got 10 and i 9 :colone:

number 2 yep.

number 3 obv weve both done part i. i agree with ur part iii. (min val of c+1/c was 2) so it foloows from there. part ii i actually didnt get to come out. AND IT WAS A LONG ALGEBRA SLOG. so was part i tbh, did u get ii to come out? u cud be right in that c-1/c should be a plus since it part ii it is so. does that give u the right nswer for part ii then?

i agree with ur number 4.

now number 5 i am finding really hard to think about. could u perhaps explain to me how u got 5.i.a) and then hopefully i can work thru the rest

Reply 645

IceKidd

Original post by Noble.

It's not (d) because then (ii) is also true contradicting there only being two true statements.

oh igu so then it is c as it isnt a or b.

cheers

Reply 646

1298977

Original post by IceKidd

here u go

ur probably right btw

Okay, here goes, do tell me if I'm not making much sense-
1. If (iii) is true, BOTH (ii) and (iv) automatically become true. But we know that EXACTLY two statements are true, so (iii) is certainly false.
2. The right pair must be some combination of (i), (ii) and (iv), in that case. But (ii) & (iv) isn't the pair, as we've been told. So that leaves us with (i) & (ii) and (i) & (iv).
3. Note that if (i) is true, (ii) is certainly false.
4. Therefore we can conclude that (i) & (iv) is the right pair, and the correct option is (c).

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Reply 647

username638250

Original post by IceKidd

Naa right here from West LonDoN. wbu;?

Wagwan bruv :wink:

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Reply 648

IceKidd

Original post by yl95

Wagwan bruv :wink:

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lol wag1 g . and wer u at

Reply 649

username638250

Original post by IceKidd

lol wag1 g . and wer u at

Sarf ldn represent braaap

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Reply 650

IceKidd

Original post by yl95

Sarf ldn represent braaap

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dafuk is that. u from england mate?

Reply 651

Noble.

Original post by IceKidd

oh igu so then it is c as it isnt a or b.

cheers

What on earth does "igu" mean? :lol:

Reply 652

IceKidd

Original post by Noble.

What on earth does "igu" mean? :lol:

i
get
you

:rofl:

Reply 653

username638250

Original post by IceKidd

dafuk is that. u from england mate?

U not in touch wiv da jargon m8, innit

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Reply 654

Noble.

Original post by IceKidd

i
get
you

:rofl:

Oh dear. Shouldn't that be "igy"? :tongue:

Reply 655

1298977

Original post by IceKidd

we already discussed number 1. you got 10 and i 9 :colone:

I'll explain 5.i.a when I come online properly, okay? I'm on my phone right now. As for 3, it was tedious and I wasn't sure if I had to work with a + or a - so I left part ii midway. It was really boring. :tongue:

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