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January 04, 2026, 03:47:54 pm
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Author Topic: what do you think about Spesh 2?  (Read 29310 times)  Share 

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AleksIlia

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Re: what do you think about Spesh 2?
« Reply #15 on: November 11, 2011, 05:54:09 pm »
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Quote from: golden on November 11, 2011, 05:51:30 pm
Quote from: ttn on November 11, 2011, 05:48:45 pm
awesome, how did you do the complex number mc? 1/zbar

I'm not sure if this is right, but what I did was:

1/(x-yi).
(x+yi)/(x^2+y^2).
X^2 + Y^2 is positive.
Hence it's just a similar thing but brought back a bit.

That's what i was trying to say, plus they tell you |z|>1 so then |z|^2 >1 and thus it will be brought in
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naomizz

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Re: what do you think about Spesh 2?
« Reply #16 on: November 11, 2011, 05:56:41 pm »
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it was doable but certainly harder than last year!
i couldn't find a, verifying the differential equation and i didnt finish the last question for dynamics. and i'm pretty sure i got the last question wrong too. 10 marks off for sure. damn!
how did you guys do the last question? do you just find the area under x(t) from t=0 to t=10?

anyway, what do you guys reckon this year's exam 2 A+ cut off would be?
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AleksIlia

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Re: what do you think about Spesh 2?
« Reply #17 on: November 11, 2011, 05:56:58 pm »
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I got 33 had square root of 170^2 + 30^2 and minused that from 200
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ttn

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Re: what do you think about Spesh 2?
« Reply #18 on: November 11, 2011, 05:57:17 pm »
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wth a=i. a element of C. lol what's C exactly? I thought it meant real numbers. Was going to put down i....
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2010: IT: Applications [43]
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ttn

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Re: what do you think about Spesh 2?
« Reply #19 on: November 11, 2011, 05:58:15 pm »
+1
Wasn't it 200i and 175i + 25j

so distance = root[ (200-175)^2 + (25-0)^2 ]
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2010: IT: Applications [43]
2011: English [34], Methods [42], Spesh [38], Chemistry [32], Physics [46]

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naomizz

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Re: what do you think about Spesh 2?
« Reply #20 on: November 11, 2011, 06:00:07 pm »
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Quote from: ttn on November 11, 2011, 05:58:15 pm
Wasn't it 200i and 175i + 25j

so distance = root[ (200-175)^2 + (25-0)^2 ]

yeah thats what i did as well
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kenny_

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Re: what do you think about Spesh 2?
« Reply #21 on: November 11, 2011, 06:05:29 pm »
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Quote from: ttn on November 11, 2011, 05:58:15 pm
Wasn't it 200i and 175i + 25j

so distance = root[ (200-175)^2 + (25-0)^2 ]

.... it was 200i? I THOUGHT THE DISTANCE WAS 200
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AleksIlia

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Re: what do you think about Spesh 2?
« Reply #22 on: November 11, 2011, 06:05:43 pm »
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Quote from: ttn on November 11, 2011, 05:57:17 pm
wth a=i. a element of C. lol what's C exactly? I thought it meant real numbers. Was going to put down i....
C is complex number set which includes R as well :)
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ttn

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Re: what do you think about Spesh 2?
« Reply #23 on: November 11, 2011, 06:08:05 pm »
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Quote from: kenny_ on November 11, 2011, 06:05:29 pm
Quote from: ttn on November 11, 2011, 05:58:15 pm
Wasn't it 200i and 175i + 25j

so distance = root[ (200-175)^2 + (25-0)^2 ]

It said 200 metres directly in front or something

.... it was 200i? I THOUGHT THE DISTANCE WAS 200
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Natters

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Re: what do you think about Spesh 2?
« Reply #24 on: November 11, 2011, 06:09:09 pm »
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i was directly forwards
j was off to the left
it went 25m to the left and 175 metres forward so i found root (2x25^2)
pretty sure that's right, i felt smart as fuck when i got that
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BoredSatan

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Re: what do you think about Spesh 2?
« Reply #25 on: November 11, 2011, 06:09:31 pm »
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i have no idea how i got the circle area thingo wrong.. did it on the calc and got pi/2.. maybe i stuffed it up somewhere..

last question i got 51.6 which i think is right.. what does itute say?
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Gaijin

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Re: what do you think about Spesh 2?
« Reply #26 on: November 11, 2011, 06:11:12 pm »
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ttn

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Re: what do you think about Spesh 2?
« Reply #27 on: November 11, 2011, 06:21:24 pm »
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anyone else got a different volume? I got 24202.
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2010: IT: Applications [43]
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AleksIlia

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Re: what do you think about Spesh 2?
« Reply #28 on: November 11, 2011, 06:21:57 pm »
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Quote from: ttn on November 11, 2011, 06:21:24 pm
anyone else got a different volume? I got 24202.

me too :) itute are wrong for a couple dw
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BoredSatan

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Re: what do you think about Spesh 2?
« Reply #29 on: November 11, 2011, 06:23:50 pm »
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Quote from: AleksIlia on November 11, 2011, 06:21:57 pm
Quote from: ttn on November 11, 2011, 06:21:24 pm
anyone else got a different volume? I got 24202.

me too :) itute are wrong for a couple dw
yep i got that too
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