2010 MM Exam 2 suggested solutions

[sajib_mostofa]

For Q2.3f, will I lose my marks if I gave my answer in degree form?

[Blakhitman]

Don't predict...but do you reckon lower than 2007?

BTW for the expected value, I drew up the table and got the values for x=0, and x=1 right, but somehow screwed up x=2 , reckon I could scrape 2/4 marks for that seeing as I did show working to find E(X) and also the table?

Also thank you so much for this, I hope the chem ones are this detailed

[Jdog]

SHIT! was the possible x values required in degree form? i left it as .81 and the 1.2 whatever

[sajib_mostofa]

SHIT! was the possible x values required in degree form? i left it as .81 and the 1.2 whatever

lol I'm just wondering if you could have it in both forms or does it have to be in radians. You would get the marks but I'm not sure I would since I converted it to degrees.

[Jdog]

what a relief i just checked the questoin, the x in terms of radian at the beginning

[Blakhitman]

lol question 1.b.v I didn't even think of doing that, instead I got the equation of the tangent and subbed in (p,10).

[Jdog]

i did the same as you black hit man,


btw for the question where it says find possible values of x in terms of a, b


we only had to give possible values right not the co-ordinate form , ??

[Mao]

Don't predict...but do you reckon lower than 2007?

BTW for the expected value, I drew up the table and got the values for x=0, and x=1 right, but somehow screwed up x=2 , reckon I could scrape 2/4 marks for that seeing as I did show working to find E(X) and also the table?

Also thank you so much for this, I hope the chem ones are this detailed

my methods days are so long ago (I did it in 07), I cannot remember what the exam was like.

If I have to rate my distant feelings vs this experience, this one is definitely more calculator intensive. If you didn't know how to navigate calculator errors, or how to use the calculator efficiently, you would have died. In terms of theoretical difficulty and algebraic gayness, this one would also take the crown. Though probability in 07 was definitely a bitch.

[Blakhitman]

Don't predict...but do you reckon lower than 2007?

BTW for the expected value, I drew up the table and got the values for x=0, and x=1 right, but somehow screwed up x=2 , reckon I could scrape 2/4 marks for that seeing as I did show working to find E(X) and also the table?

Also thank you so much for this, I hope the chem ones are this detailed

my methods days are so long ago (I did it in 07), I cannot remember what the exam was like.

If I have to rate my distant feelings vs this experience, this one is definitely more calculator intensive. If you didn't know how to navigate calculator errors, or how to use the calculator efficiently, you would have died. In terms of theoretical difficulty and algebraic gayness, this one would also take the crown. Though probability in 07 was definitely a bitch.

Cool thanks ( I loved the prob in 07 haha, finding maximums in prob O.o) , I hope to god the A+ is low

[awesome2damax]

I hated this year's exam. I honestly loved my CAS calculator, cause i had known so much and used it oftenly. But my nerves could not be controlled, i was pressing in wrong numbers, like the minimum number i got 1.8 instead of 18, and easy questions just put me off. I mean, at school, considering going to a good school, I got the maths methods award, which they expect a 50 from me but now it's just not the same. I had a breakdown in the 2nd exam and got 60, which was all because my watch had stopped when i hadn't realise as a result of it dropping it on the floor. Terrible day, terrible, day. Irony here, I did better in spesh than methods.

[lorcan_raven]

For question 4 part 1 - will I lose a mark for calling the second stationary point a "local maximum turning point" instead of just a maximum turning point?

Will I lose a mark for using tree-diagrams and not Markov chains, but getting the same answers after all?

[sajib_mostofa]

No and No 

[lorcan_raven]

Thankyou thankyou thankyou! Woo then I'm looking at around ~63 for Exam 2.
Do not know HOW I pulled that outta my ass.

[lorcan_raven]

For Question 2, part ii) ...

I used tree-diagrams to find the probability of each branch of the sample space,
then added these up into sections of S = 0, 1 or 2. Then from THESE probabilities, I forgot to then multiply them by the S values to get the expected value and just said 2 was the expected value (highest prob)
Will I get 2 or 3 marks for this, out of 4?

[camrenis]

Thanks man.  I actually did some questions completely different to that .  And that volume question.... guess it wasn't that confusing, I'd forgotten how trig worked like that :\.  Actually, I don't remember doing that at all in Methods, I only remember doing that in AGM.  I'm looking at around low 60's, can't remember some of my answers though.