So, who's good at maths

G

gringotsgoblin

In Cryo Sleep
Ok all you physics graduates (and drop outs), you must be good at maths...right?

Now, even I can (just about) do English maths...but Chinese maths...this bamboozles my panties off.

http://news.bbc.co.uk/1/hi/education/6589301.stm

Correct answers (or impressive attempts) get kudos points from me...not that I have high rep or anything, but there has to be *some* kind of prize.
 
Tetsuo_Shima

Tetsuo_Shima

In Cryo Sleep
ho hum, I thought there was a reason the second q was simple... my mistake, again. can't do the first one, that's bonkers!
 
G

gringotsgoblin

In Cryo Sleep
Tetsuo_Shima said:
Well, q1 means absolutley nothing to me (recall doing something similar to that in Higher, but with a triangle or oblong, not a quardaplasmaloid-sided runecube*)

q2 is fairly simple trigonometry-

i) AC^2 = AB^2 + BC^2 = 3^2 + 4^2 = 9 + 16 = 25
AC = sqrt25 = 5!

ii) Area of triangle = AB.BC / 2 = 3x4/2 = 12/2 = 6 units squared

iii) tan (theta) = opposite/hypotenuse = 3 / 4 = 0.75 = 3/4 (as fraction)

I think that the real deserver of rep is the person who can crack the 1st question.


[size=-4]* note - this may be fictitious[/size]
Click to expand...

Yeah. Q2 is the English entry question - which I could make a half assed guess at. Q1 is beyond me.
 
waterproofbob

waterproofbob

Junior Administrator
Its not quite as nasty as it looks. I hate working backwards from diagram like this, it does my nut. cba to look at it tonight might have a stab when i can think about what its actually asking. general nuts is to re draw it so it makes sense then bash the triggy goodness out of it
 
thatbloke

thatbloke

Junior Administrator
That first question is basically some planar vector operations which you use to prove those. Can't remember which as it was about 5 years since I was doing that kind of stuff, but it probably involves the dot product...
 
Dragon

Dragon

Well-Known Member
can somebody translate the task into German for me? ^^" I'm not that familiar with mathematic terms!
 
Ronin Storm

Ronin Storm

Administrator
Staff member
Dragon said:
I'm not that familiar with mathematic terms!
Click to expand...

I fear that maybe the problem.

I'm a degree level computational physics drop out. I can't even remember how to do the easy maths on our papers, never mind remember what the different symbols mean for the other one.

Besides, I'm sure someone has already written a library to solve the problem for me in code. ;)
 
Dragon

Dragon

Well-Known Member
uhm ... I think you got me wrong ... I meant to say that I'm not familiar with the English math-terms ... I'm unable to translate them into German!
 
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