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Edexcel C2 20th May 2015 *Official Thread* watch

1. Anyone formula?
2. which proof do we need to know?

someone help
3. (Original post by Sam_the-man)
Someone please tells every formula I need to know
Volume of a Cylinder = Pie * r^2 * h
Volume of cuboid = LHW
Surface Area of a Cylinder = 2*h*pie*r +2*pie*r^2
(Optimization)

r*theta = Arc Length
theta*1/2 * r^2 = Area of sector

1/2*a*b*SinC = Area of Triangle

Tan Theta = Sin Theta/Cos Theta

(a+b)/2 * h = Area of Trapezium
4. (Original post by thiss1)
which proof do we need to know?

someone help
Sn = a(1-r^n) / 1-r
You need to know the proof for that.
Sn = a(1-r^n) / 1-r
You need to know the proof for that.
is it just that ?
6. Remainder theorem too!
7. (Original post by thiss1)
is it just that ?
For the C2 paper, yes that is it.
For the C2 paper, yes that is it.
9. (Original post by Hsakbo)
Remainder theorem too!
I thought that was more a method than proof. But if you are talking about things like that then yes remainder theorem and maximum/minimum (double derivative)
10. (Original post by thiss1)
What about them? You just need to learn the rules for that
Volume of a Cylinder = Pie * r^2 * h
Volume of cuboid = LHW
Surface Area of a Cylinder = 2*h*pie*r +2*pie*r^2
(Optimization)

r*theta = Arc Length
theta*1/2 * r^2 = Area of sector

1/2*a*b*SinC = Area of Triangle

Tan Theta = Sin Theta/Cos Theta

(a+b)/2 * h = Area of Trapezium
Trying to memorize them on the way to school xD
Volume of a Cylinder = Pie * r^2 * h
Volume of cuboid = LHW
Surface Area of a Cylinder = 2*h*pie*r +2*pie*r^2
(Optimization)

r*theta = Arc Length
theta*1/2 * r^2 = Area of sector

1/2*a*b*SinC = Area of Triangle

Tan Theta = Sin Theta/Cos Theta

(a+b)/2 * h = Area of Trapezium
Thanks man
13. Bro! did you just started C2 today? :??
14. I DONT HAVE A SPARE CALCULATOR
15. When you do area under a curve, even if the answer is negative do you give the absolute (positive) value?
16. Just so you know guys, the R papers are not the replacement papers, they are REGIONAL papers.

When edexcel withdrew the FP1 exam (and others) in June 2013, the replacement paper looked identical to the original paper. The R paper is for students outside the UK. IAL papers are for different timezones. (Itd be unfair if someone sat the same paper in India and finished 5 hours before we started it haha).

But the papers have NOT been leaked.
17. (Original post by dripper)
When you do area under a curve, even if the answer is negative do you give the absolute (positive) value?
you do, otherwise you may have a negative area or they could cancel out. even if the y values are negative, you have to assume they are positive
18. (Original post by dripper)
When you do area under a curve, even if the answer is negative do you give the absolute (positive) value?
If they say find the area yes give the abosolute answer. If they evaluate the integral blah then give whatever cones out of the integral. Remember peopke that the calc can check ur answers!!

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19. (Original post by bubblegumcat)
that's the differentiation stuff right? I might be able to help

Posted from TSR Mobile
Yep with those shapes
20. Can anybody clarify that area thing for me please?

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