General Thoughts: Mathematics Extension 2 (3 Viewers)

RealiseNothing

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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:

 

aimpacc

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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
 
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fishrushed

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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.
 

freddo723

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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 :(
 
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thexdojo

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

Makematics

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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 :)
 

spongebob1

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

hamstar

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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.
 

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