Edexcel A2 C3 Mathematics 12th June 2015 Watch

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TeeEm
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#1821
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#1821
(Original post by Gilo98)
Last minute advice/predictions?
I never predict ...
I hope the paper is reasonably hard, because my students do generally better on harder papers ...
(and I hope everybody else does bad too, to help my students even more )
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Maham88
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#1822
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#1822
(Original post by ThePrestigeUK)
When its Rcos(x-alpha)

Do we work out alpha the same as Rcos(x+alpha)

I swear in the morning I thought we flip for minus, but now just done an example lost 6 accuracy marks FFS

pls someone help me out
use this cos(A + B) = cosAcosB - sinAsinB
cos(A - B) = cosAcosB + sinAsinB
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suyoof123
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#1823
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#1823
(Original post by humayra.ac)
no because it is less than 360 not equal to, (the line under the less sign)
jazaak sis , i missed that sadly.....
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AbubakarB
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#1824
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#1824
(Original post by frozo123)
yes I can
what do you mean flip? reflection in the asymptote?
apologies if it's unclear
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BBeyond
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#1825
how the **** do i reflect in the line y=x this is the hardest thing in c3 for me atm lol
MrBowcat
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#1826
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#1826
So excited for c3. I'm ready to mash up de boompa
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davidharris96
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#1827
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#1827
Anyone else use a graphical calc to check answers? Gives such peace of mind!
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Gilo98
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#1828
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#1828
(Original post by TeeEm)
I never predict ...
I hope the paper is reasonably hard, because my students do generally better on harder papers ...
(and I hope everybody else does bad too, to help my students even more )
thought you'd say that Me too, praying for a ******* of a paper. June 2013 wasn't really that hard for me and 100ums was so low...
(Original post by BBeyond)
how the **** do i reflect in the line y=x this is the hardest thing in c3 for me atm lol
omfg i feel your pain. no joke the most difficult thing in c3 for me - can never 'visualise' what it would look like
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Mrkingpenguin
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#1829
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#1829
When would you use flip dy/dx into 1/(dx/dy) I can't seem to see when its wanted in past questions
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frozo123
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#1830
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#1830
(Original post by BBeyond)
how the **** do i reflect in the line y=x this is the hardest thing in c3 for me atm lol
I might sneak in a mirror
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Viggi
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#1831
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#1831
guys just wondering (and panicking!) how much integration do we need to know for this (C3) because Exam solutions doesn't have a section on integration...
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BBeyond
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#1832
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#1832
(Original post by Gilo98)
thought you'd say that Me too, praying for a ******* of a paper. June 2013 wasn't really that hard for me and 100ums was so low...


omfg i feel your pain. no joke the most difficult thing in c3 for me - can never 'visualise' what it would look like
****ing tell me about it, i'm lit hopeless at it there must be some easy way of doing it i can't visualise ****, especially when im trying to do the arcsin/tan/cos graphs i havent got a clue
Bustamove
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#1833
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#1833
Which paper do you guys find the hardest?
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avninsa
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#1834
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Can anyone explain how bii and c are done? Mark scheme isnt helping muchName:  IMG_20150611_211400.jpg
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BBeyond
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#1835
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#1835
(Original post by Mrkingpenguin)
When would you use flip dy/dx into 1/(dx/dy) I can't seem to see when its wanted in past questions
If you have dx/dy you do 1/dx/dy to get dy/dx
suyoof123
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#1836
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#1836
(Original post by BBeyond)
how the **** do i reflect in the line y=x this is the hardest thing in c3 for me atm lol
Hard isnt it...same for me.

We should be allowed mirrors

But one way to do it is reflect all the crossing points , like (0,-3) into (-3,0)
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Rimzzzzz
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#1837
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#1837
(Original post by Viggi)
guys just wondering (and panicking!) how much integration do we need to know for this (C3) because Exam solutions doesn't have a section on integration...
NONE! there is no integration in C3
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Maham88
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#1838
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#1838
(Original post by Viggi)
guys just wondering (and panicking!) how much integration do we need to know for this (C3) because Exam solutions doesn't have a section on integration...
integration is in c4
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NikolaT
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#1839
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#1839
(Original post by Viggi)
guys just wondering (and panicking!) how much integration do we need to know for this (C3) because Exam solutions doesn't have a section on integration...
None.

There's no integration on the C3 spec...
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Viggi
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#1840
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#1840
(Original post by Maham88)
integration is in c4
yay thank you!
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