General Thoughts: Mathematics (4 Viewers)

[mahoo_mk]

did u guys get 60 something for the minimum distance between the cars?

yes, t= 0.6...

 

[mahoo_mk]

me too..Is 4 right?

no it was 1

 

[mahoo_mk]

fuck me in the eye this was harder than last year by a factor of 9000

 

[Shazer2]

me too..Is 4 right?

Well it's not a tangent at if C is 4. http://www.wolframalpha.com/input/?i=y=2x^2-3x+4;+y=5x-7

 

[dunjaaa]

so r^2 = 12900t^2-18000t+10000, which is the same as 100(129t^2-180t-100). dr^2/dt = 100(258t-180), when dr^2/dt =0 t=30/43, finding d^2r^2/dt^2 = 100(258), therefore minimum for all values of t>=0. when t=30/43, r = 60.99942813, r=61 nearest km

 

[spanky125]

What were the answers to the horse one?

 

[yus456]

People saying that it was an easy exam make me feel so shit lol. I thought that was very hard exam.

 

[lolwot]

so r^2 = 12900t^2-18000t+10000, which is the same as 100(129t^2-180t-100). dr^2/dt = 100(258t-180), when dr^2/dt =0 t=30/43, finding d^2r^2/dt^2 = 100(258), therefore minimum for all values of t>=0. when t=30/43, r = 60.99942813, r=61 nearest km

how did you do i) of that question?

 

[Shazer2]

What were the answers to the horse one?

4 and 8 months then the graph was just an adjusted cos graph that didn't fall below 350.

 

[mahoo_mk]

who did the last question last part



or someshit like that i didnt even know where to start

 

[acallus]

People saying that it was an easy exam make me feel so shit lol. I thought that was very hard exam.

People saying it was easy probably did it wrong.

 

[spanky125]

who did the last question last part



or someshit like that i didnt even know where to start

I didn't touch it.

 

[mahoo_mk]

how did you do i) of that question?

i was told cos rule but i legit did cos rule on 4 booklets, around 16 attempts and still didnt get it

 

[mahoo_mk]

206 users

 

[acallus]

What's the go with only getting one booklet per question to start with? I used at least two for each question...

 

[leesh95]

Please someone tell me that you get some marks for working out? since I got about 20% of the answers wrong.

 

[dunjaaa]

It was 1/XY = 1/AD + 1/BC, but I used ratio intercept theorem parallel lines cut transversals in equal ratio or something like that and also the corresponding sides in the similar triangles and from there developed a relation. Don't have the diagram to explain, but that took me forever.

 

[mahoo_mk]

someone upload the goddamn paper please, i want to know how much i fucked up

feel like shit

+1

 

[yus456]

someone upload the goddamn paper please, i want to know how much i fucked up

feel like shit

Looking at the paper again isn't going to change anything. You are going to feel worse and may impact on your study for exams to come.

 

[leesh95]

After reading this thread I have tuned down my prediction of 70/100 to 60/100