The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

Official WJEC C1 Discussion Thread 14/01/2013

Scroll to see replies

Reply 80
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by tomfishh
Well and truly confused now! Is the m/s right?


I don't even know :frown:

I'd probably lose those two marks in the exam :erm:
(edited 11 years ago)
Reply 81
Avatar for tomfishh
tomfishh
Haha, no probs :smile:

Thanks for your help with the other one though! And good luck tommorrow!
Reply 82
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by tomfishh
Haha, no probs :smile:

Thanks for your help with the other one though! And good luck tommorrow!


This is annoying... I want to know now... If it has one real root...

If k > 27 the whole curve will be under the x axis apart from one intersection... As with k < -5 I think... :/

Thank you! You too! :eek4:
Reply 83
Avatar for dh1995
dh1995
10
Can anyone explain how to do this?
show that 2/square root of 12 - square root of 8
can be written in the form sqaure root of A + square root of B where A and B are integers
Reply 84
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by dh1995
Can anyone explain how to do this?
show that 2/square root of 12 - square root of 8
can be written in the form sqaure root of A + square root of B


Rationalise the first term my multiplying by Root12.

Simplify Root8 = Root4*Root2= 2Root2

2Root12/12 - 2Root2
Root12/6 - 2Root2

Which paper?

Reply 85
Avatar for dh1995
dh1995
10
Original post by L'Evil Fish
Rationalise the first term my multiplying by Root12.

Original post by L'Evil Fish


Simplify Root8 = Root4*Root2= 2Root2

2Root12/12 - 2Root2
Root12/6 - 2Root2

Which paper?


May 12
im still confused
EDIT: yeah I should have made it clear it's 2 over both of them
(edited 11 years ago)
Reply 86
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by dh1995

May 12
im still confused


May 2012? I didnt see that question there... :/
How did everyone find it?


Posted from TSR Mobile
Reply 88
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by Sophie1994
How did everyone find it?


Posted from TSR Mobile


it was fine... I think, I was getting nowhere with the surds and geometry then realised I wrote down the wrong signs so after that it was fine...

Hopefully a good mark!

You?
I struggled with the K questions but asides from that I found it easy enough. Unless I'd made lots of stupid mistakes...
Reply 90
Avatar for zippy103
zippy103
I thought that was super hard, the hardest among all the past papers I've donee
Reply 91
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by SamHedges
I struggled with the K questions but asides from that I found it easy enough. Unless I'd made lots of stupid mistakes...


hmmm...

Shall I post some answers I had... If I remember correctly...

Spoiler

Which reminds me, I forgot to square the whole of (4x) so I got 5/4 on the binomial expansion which frustrated me. I'm sure I'll still get some marks for it though.
Reply 93
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by SamHedges
Which reminds me, I forgot to square the whole of (4x) so I got 5/4 on the binomial expansion which frustrated me. I'm sure I'll still get some marks for it though.


You should :smile: I got 5
for k I remember I got 2/3! But I messed up 1b. which I'm gutted about! :frown: And I couldn't do the binomial expansion question AT ALL. Overall it was meh, so so. I think I dropped around 12 marks, so I'm hoping an overall 63/75 should be enough to get around a UMS of 85 :smile:
Reply 95
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by SirVeillance
for k I remember I got 2/3! But I messed up 1b. which I'm gutted about! :frown: And I couldn't do the binomial expansion question AT ALL. Overall it was meh, so so. I think I dropped around 12 marks, so I'm hoping an overall 63/75 should be enough to get around a UMS of 85 :smile:


I got 2/3 as well :smile: what was b again?
Original post by L'Evil Fish
I got 2/3 as well :smile: what was b again?


1b. Was proving that L and AB were perpendicular. I didn't think about converting it to y=mx+c then working from there! So gutted about it. :angry: We were allowed to bring the paper itself so I'm going back through it now, practically torturing myself.
Reply 97
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by SirVeillance
1b. Was proving that L and AB were perpendicular. I didn't think about converting it to y=mx+c then working from there! So gutted about it. :angry: We were allowed to bring the paper itself so I'm going back through it now, practically torturing myself.


I turned L into y = mx + c and said the product was -1
Original post by L'Evil Fish
I turned L into y = mx + c and said the product was -1

Yeah that's what it was supposed to be :/
Reply 99
Avatar for L'Evil Fish
L'Evil Fish
OP
18
Original post by SirVeillance
Yeah that's what it was supposed to be :/


Oooh, another question that was meh, was the very last one...

I said k>19 or k<-5

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you