I got the same for 9 and 10. Can't remember the rest.Rampager said:Question 9 b) ii) $975.
Question 10 a) 5ln5 - 4
Question 7 a) e^(3) and e^(-1)
Question 6c) 18.75(PI) units^2
Question 6b)i) 20
ii) t = 10
iii) t = 6
iv) forget.
I got the same for 9 and 10. Can't remember the rest.Rampager said:Question 9 b) ii) $975.
Question 10 a) 5ln5 - 4
Question 7 a) e^(3) and e^(-1)
Question 6c) 18.75(PI) units^2
Question 6b)i) 20
ii) t = 10
iii) t = 6
iv) forget.
yep they're rightipod21 said:How about probabilty
q7)c)
i got ii) 7/27
iii) 4/9
q9)a) i)0.0225
ii)0.17
doubt they are right though :S
they say a raw mark of around 86 or 87 from 120 will scale into da 90sewasemma said:Hey guys just wondering.. what would an 86/120 be roughly as a moderated mark for maths. thanks
lol u idiot he didn say raw.Rampager said:Band 4, unlikely Band 5.
Eh? ln x = -1 can be done...betraya said:Rampager, lnx =3 is the only answer, you can't have lnx=-1 because it's undefined so lnx=3 and this e^3 is the only answer
i see what u did..looks right! but i did this... now it it looks wrong:Rampager said:7a) x = 2e^(-3) ? Thats it? Sorry Ipod, I think you got it wrong.
ln x - (3/ln x) = 2
Let u = ln x
u - 3/u = 2
u^2 - 3 = 2u
u^2 - 2u - 3 = 0
(u - 3)(u + 1) = 0
u = 3, u = -1
ln x = 3, ln x = -1
x = e^(3) and x = e(-1)
this.harryboyles said:I got $975.85
holy mother of god i got it right :jaw:minijumbuk said:f'(x) = k(b^{2}x - x^{3}/3)
f(x) = k(b^{2}x^{2} - x^{4}/12) + C
When x = b, y = 0
0 = k(b^{4}/2 - b^{4}/12) + C
C = - 5b^{4}k/12
f(x) = k(b^{2}x^{2} - x^{4}/12) + - 5b^{4}k/12
When x = 0,
f(x) = - 5b^{4}k/12
Therefore 5b^{4}k/12 below x-axis
o-m-g. thankyou so much u have just restored my confidenceBekhit said:they say a raw mark of around 86 or 87 from 120 will scale into da 90s
so its prob a high band 5 or an early band 6
lol u idiot he didn say raw.
thats right though isn't it? i got 0.0225, and then i said so therefore 2.25%chance blah blah, and similarly for b??ipod21 said:dumbest mistake i made:
probabilty"
q9)a) i)0.0225
ii)0.17
I wrote a)i) =2.25%
ii)= 17%.
i had no idea why i changed them to %............. argh! there goes more marks
even for a test this easy?? i hope so..Bekhit said:they say a raw mark of around 86 or 87 from 120 will scale into da 90s
so its prob a high band 5 or an early band 6
ipod21 said:dumbest mistake i made:
probabilty"
q9)a) i)0.0225
ii)0.17
I wrote a)i) =2.25%
ii)= 17%.
i had no idea why i changed them to %............. argh! there goes more marks
nwz lol...ewasemma said:o-m-g. thankyou so much u have just restored my confidence
hehe
i guess it should vary from year 2 year depending on da exam and da stateiluvGG said:even for a test this easy?? i hope so..