General Thoughts: Mathematics Extension 2 (1 Viewer)

[alexandred]

i) 0.2401

ii)

I think these were my answers.

These are right, but I assume you can (I did, anyway) also write it as the sum from 3 to 8 of the same expansion.

 

[freddo723]

holy shit 'there are currently 126 users browsing this thread'. hi lurkers!

How are we?

 

[obliviousninja]

These are right, but I assume you can (I did, anyway) also write it as the sum from 3 to 8 of the same expansion.

yea.

 

[obliviousninja]

someone explain the geometrical complex question. zw'-wz' = 4iaz

 

[Fred2013]

I made so many lol.

how do you even know if u made a silly ..?

 

[RealiseNothing]

someone explain the geometrical complex question. zw'-wz' = 4iaz

and

Then you just do some algebra, i.e. when you multiply two complex numbers, you multiply their modulus and add the angles. It comes out easily as the area of the triangle. And you just work out the area of the triangle as:

 

[RealiseNothing]

how do you even know if u made a silly ..?

Going over the paper at home.

 

[aimpacc]

well i only found 2 marks lost on my paper

its the freakin easiest test of my life..i should get 99 or 100 fk me

 

[fishrushed]

someone explain the geometrical complex question. zw'-wz' = 4iaz

I just found the area of triangle using 1/2 ab sin(x) and multiplied it by 4i. Then I expressed z and w in mod arg form and found the LHS. It then equalled in the end.

 

[fishrushed]

well fk i made another silly

Same here
I think I stopped on the question halfway by accident too

 

[obliviousninja]

I probs got 60/100. Won't make the E4 cut-off though, probs mid 60

 

[freddo723]

AHHAHAAHA. Had a look on one of these forums the other day. saw realisenothing and spiritual being talking about 98 raws and stuff. Scared me! Thouht you were massive noobs...

Here I am struggling to even do the first question of multiple choice, and you're telling me it's easy.
Sigh.

Ahhh easiest Q!

It wasn't that bad imo. You just use right-angled triangle trigonometry basically. It is just conceptual, but once you understand what is actually happening, it's fairly straight forward.

Anyway:

1) forgot to answer a multiple choice (said I would come back to it at the end, nope)
2) drew the hyperbola wrong lols
3) forgot to substitute tan(x) back in for 'u'

could have had 90+ raw fuck

Ahhh will proably beat u too!
Definately the easiest 4U paper i have ever seen!

well i only found 2 marks lost on my paper

maybe not that easy but

 

[thexdojo]

Left out about 18marks, hopefully gonna get in the 70-80%, pretty average test overall.

 

[superSAIyan2]

would you lose a mark for leaving your answer as 15pi/96 and not simpllfying?

 

[Makematics]

and

Then you just do some algebra, i.e. when you multiply two complex numbers, you multiply their modulus and add the angles. It comes out easily as the area of the triangle. And you just work out the area of the triangle as:

ah i let z=x+iy and w=a+ib and it worked out for me too

 

[hamstar]

would you lose a mark for leaving your answer as 15pi/96 and not simpllfying?

FML if i lose a mark for not simplifying. I barely used the calculator during the exam.

 

[Makematics]

what was the answer for Q7 and how do you do it?

 

[spongebob1]

don't know if this has been asked but has terry lee or anyone done solutions?

 

[Makematics]

don't know if this has been asked but has terry lee or anyone done solutions?

not yet but itll come up here when he finishes them
http://www.hsccoaching.com/documents/35.html

 

[hamstar]

I guess it was an alright test. I was expecting more integration (i mean they put partial fractions and no integration. WTF!!!) and was expecting more volume questions. complex numbers locus questions were hard and a bit challenging. probably getting 65-70% raw.