C4 today...Summer 2013

[Alexandra_Lin]

How do you think about this paper?? anyone?

I found it quite ok. was a kind paper apart from Q8)b)
any one got the position vectors of B? how did you do it?

 

[k.k.sibtain]

What was the volume? And I didn't do that one either

 

[Aaron Rodrgp]

2pi?

 

[k.k.sibtain]

YESSSSSSSSSSSSSSSSS!!! Thank GOD

 

[k.k.sibtain]

And the find the value of root three?

 

[Alexandra_Lin]

2pi?

What was the volume? And I didn't do that one either

I've got 2pi as well

 

[Alexandra_Lin]

And the find the value of root three?

the fraction is really wired. a very big number over another big no. lol

 

[Aaron Rodrgp]

the parallel to y axis thingo?? dy/dx shud be equal to 0 or infinity??

 

[Herald Grove]

the parallel to y axis thingo?? dy/dx shud be equal to 0 or infinity??

to 0 I think

 

[vCarbon]

the fraction is really wired. a very big number over another big no. lol

It was either 3root3 / 5
or
4 significant number / 4 significant number || where significant number is 1234 for example. ||
I can't remember what the numbers were.

 

[MerdeonaStick]

Yeah i got that here are some of the answers i got:
1b) e-2
2b) 1405/1352
3c) 2pi
4a) 1
4b) y=halfx^2 k=2
5b) 2ln(5/3)
6b) 161 seconds
7b) (-6,3)
8a) p=1
8b) was completely stuck on this WTF??

 

[Herald Grove]

The paper was ok alright; happy that I finished with a good mood. Last Exam!!!!!!!!!!!!
The whole paper was good except the vectors; failed it all. I got a negative 3 and 27 in part A and couldn't do part B!

 

[Aaron Rodrgp]

to 0 I think

but tan 90 is infinity rite?

 

[k.k.sibtain]

Yeah i got that here are some of the answers i got:
1b) e-2
2b) 1405/1352
3c) 2pi
4a) 1
4b) y=halfx^2 k=2
5b) 2ln(5/3)
6b) 161 seconds
7b) (-6,3)
8a) p=1
8b) was completely stuck on this WTF??

For 2b, I think you had to multiply it by 5/3 and 5b was 2ln(2/3)

 

[vCarbon]

Yeah i got that here are some of the answers i got:
1b) e-2
2b) 1405/1352
3c) 2pi
4a) 1
4b) y=halfx^2 k=2
5b) 2ln(5/3)
6b) 161 seconds
7b) (-6,3)
8a) p=1
8b) was completely stuck on this WTF??

Agree with most of that.
7b) I got (-3,6)
8a) I got p=-1
8b) I got somewhere along the calculations 8tan45 = 8. Then you know B was either on the left hand side or right hand side of A,
so I added 8 to the i coordinate of position A and subtracted 8 from the i coordinate of position A.

 

[Herald Grove]

Yeah i got that here are some of the answers i got:
1b) e-2
2b) 1405/1352
3c) 2pi
4a) 1
4b) y=halfx^2 k=2
5b) 2ln(5/3)
6b) 161 seconds
7b) (-6,3)
8a) p=1
8b) was completely stuck on this WTF??

In 2b) what was the question? also 2pi is this vectors?
4b) i wrote same equation but k= 1/2 why 2?
Q8) Lost 9 marks!

 

[Herald Grove]

but tan 90 is infinity rite?

no it wasn't tan 90?!!! never got it but do you remember equation???
I got (-6,3) and (-6,3) as the coordinates thats what I remember

 

[MerdeonaStick]

For 2b, I think you had to multiply it by 5/3 and 5b was 2ln(2/3)

5b I checked on the integration calculator it was 2ln 5/3, I wasnt too sure on 2b it did look a bit dodgy to me

 

[vCarbon]

also 2pi is this vectors?

2Pi the question was where you have to use
pi (integration) y^2 dx

 

[Herald Grove]

For 2b, I think you had to multiply it by 5/3 and 5b was 2ln(2/3)

5b is correct for me!