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Edexcel FP2 Official 2016 Exam Thread - 8th June 2016

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Original post by Zacken
Why not? Fairly sure it is because we do graph sketching in C1/2.




yh i know but even something like this?
"sketch the graph of g(x)=cos3x +2xcos3x" (p4 jan 03 qn 7)
(check the MS cuz you have to workout g(x) )
Original post by ChuckNorriss
yh i know but even something like this?
"sketch the graph of g(x)=cos3x +2xcos3x" (p4 jan 03 qn 7)
(check the MS cuz you have to workout g(x) )


Yeh so
(2x+1)(cos3x)
So an oscillating wave bounded by 2x+1 and -(2x+1) with zeros at 3x=(2n+1)pi/2



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Snapchat-4932855992704932423.jpg
Ik this is a prettyyy basic sum but could someone please solve it w all the steps? Thanks!
image.jpg
Original post by imnoteinstein
Snapchat-4932855992704932423.jpg
Ik this is a prettyyy basic sum but could someone please solve it w all the steps? Thanks!

Sorry it's not very neat, hope this helps :smile:
Original post by imnoteinstein
Snapchat-4932855992704932423.jpg
Ik this is a prettyyy basic sum but could someone please solve it w all the steps? Thanks!


I hope you know that this is not a sum. It is a polar equation.


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Thanks a lot, totally helped! :smile:
Original post by economicss
image.jpg
Sorry it's not very neat, hope this helps :smile:
Yessir

Original post by physicsmaths
I hope you know that this is not a sum. It is a polar equation.


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Original post by imnoteinstein
Thanks a lot, totally helped! :smile:


No problem :smile:
hate complex number inequalities booo
Are all of you doing FP2 as an A2 or AS module?
Original post by techfan42
Are all of you doing FP2 as an A2 or AS module?


How else are we meant to do it? :tongue:

Edit: I just realised what you meant... I've been reading up on too much set theory and logic.
(edited 8 years ago)
Original post by Zacken
How else are we meant to do it? :tongue:

Edit: I just realised what you meant... I've been reading up on too much set theory and logic.


Yeah, I meant are you currently doing it in your A2 year or AS :smile:
Snapchat-1954692167840861824.jpg
Okay so the centre's (-4/5,0) and radius is 6/5. How do we do the b part?
Original post by imnoteinstein
Snapchat-1954692167840861824.jpg
Okay so the centre's (-4/5,0) and radius is 6/5. How do we do the b part?


Well, you know what ∣z∣=2|z|=2 maps to, so what does ∣z∣≤2|z| \leq 2 map to?
(edited 8 years ago)
Original post by Zacken
Well, you know what z=2z=2 maps to, so what does z≤2z \leq 2 map to?


okay z=2 maps to the circe, so z \leq 2 should map to the circumference of the circle and everything inside it?
Original post by imnoteinstein
okay z=2 maps to the circe, so z \leq 2 should map to the circumference of the circle and everything inside it?


Try substituting the origin O (0, 0) to see where it maps to. It works as a nice test to see where the region lies. Zacken's method is probably more formal but I thought I'd show you a quick alternative as well
Original post by techfan42
Yeah, I meant are you currently doing it in your A2 year or AS :smile:

I think most people do it in their A2 year once they've learned C3/C4. :smile:
Reply 317
Avatar for Cpj16
Cpj16
15
When finding the area of R2 why do we integrate equation 2?

What is wrong with integrating equation 1 with limits pie/2 and pie/6

thanks
(edited 8 years ago)
FP2 Ex7DQ11.PNG50.6KB
Original post by Ayman!
They seem to increase by one raw every year. :afraid:

The papers I've done so far have been trivial though, 2010-13. Which ones have you done?


Hey mate, sorry for the late reply. Not many tbh, find that most of the questions are v similar so not much practice needed. Hardest part for me are transformation questions!
Reply 319
Avatar for Cpj16
Cpj16
15
dw ^^^ *got it now!! :biggrin:D

Hope everyone is having fun revising

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