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# Edexcel GCSE Maths Paper 1 Help Thread

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1. If anyone is in need of help in some last minute revision for the maths exam post your questions here and I'll try my best to help. I got an A* this November so want to try and help anyone if I can. Good Luck with the exam everyone!
2. Hey could you tell me where i can find a list of all the non calc maths topics
3. Where or how to learn graph transformations please
4. Yo! Can someone explain the alternate segment therom and proof about consecutive numbers. Thanks, much appreciated!
5. WOW your so clever! Could you help me with histograms, if that's possible?
6. Anyone need any help with anything PM and I will be happy to help as it will help me.
7. (Original post by katie0400)
Where or how to learn graph transformations please
Transformations of functions

f(x) > f(x+a) = Translation, vector -a, 0

f(x) > f(x)+a = Translation, vector 0, a

f(x) > af(x) = Stretch, parallel to the y axis, scale factor a

f(x) > f(ax) = Stretch, parallel to the x axis, scale factor 1/a

f(x) > -f(x) = Reflection in the x axis

f(x) > f(-x) = Reflection in the y axis
8. What are you tips for getting an A*?
9. (Original post by Reachin4TheStars)
Could you help me with histograms, if that's possible?
Histograms

Remember:

•Frequency = Area of a bar
•Frequency Density = Frequency / Class Width
•So Frequency = Frequency Density x Class Width
•So Frequency Density (y axis) x Class Width (x axis) = Area of the bar = Frequency
10. (Original post by Ben.M)
Histograms

Remember:

•Frequency = Area of a bar
•Frequency Density = Frequency / Class Width
•So Frequency = Frequency Density x Class Width
•So Frequency Density (y axis) x Class Width (x axis) = Area of the bar = Frequency
Awwhh! Thank you so much!
11. Just to clarify, is this a thread about the Unit 1 Maths B Modular exam??
12. (Original post by Jack210)
Hey could you tell me where i can find a list of all the non calc maths topics
. This website outlines a lot of them and seems like a good source. http://fhsmathsrevise.weebly.com/rev...alculator.html
Your best bet would be past papers to make sure you've covered all the types of questions that may come up. Good Luck!
13. (Original post by Jaff_)
Yo! Can someone explain the alternate segment therom and proof about consecutive numbers. Thanks, much appreciated!
When doing proofs involving consecutive numbers or multiples, use n

For an even number, use 2n

For an odd number, use 2n+1 or 2n-1

When squaring, remember to square fully, for example (2n+1)^2 is (2n+1)(2n+1) = 4n^2 + 4n + 1
14. (Original post by Reachin4TheStars)
Awwhh! Thank you so much!
You're welcome, I hope that all makes sense 👍😊
15. (Original post by Ben.M)
You're welcome, I hope that all makes sense 👍😊
Perfect sense! Thank you soo muchh!
16. (Original post by Reachin4TheStars)
Perfect sense! Thank you soo muchh!
Awesome 😊 Anything else I can help with?
17. How do you work out if a vector is parallel/straight line?
18. (Original post by Ben.M)
Awesome 😊 Anything else I can help with?
Ummm, the expressions for volume and area like the pi ones, cuz I wanaa make sure I know 'em properly, thanks very much! & That's the last thing, hopefully!
19. (Original post by Reachin4TheStars)
Ummm, the expressions for volume and area like the pi ones, cuz I wanaa make sure I know 'em properly, thanks very much! & That's the last thing, hopefully!
Area of a circle = πr^2
Circumference of a circle = πd
Area of a sector = θ/360 x πr^2
Arc length of a sector = θ/360 x πd
Circumference of a sector = Arc length + SIDES
Volume of a sphere = 4/3 πr^3 (will be on formula sheet)
Volume of a hemisphere = Volume of a sphere, all divided by 2, so a quarter of a sphere would be divided by 4 etc.

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