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The Edexcel C2 (24/05/12 - AM) Revision Thread

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Do some solomon press differentiation questions, it should help you to think of how to solve these problems for the actual exams.

There's only 2 or 3 shape ones

Reply 181

ben1996123

Past papers here :biggrin:

Reply 182

attiyatanvir

guyz i have a doubt in jan 201o0 c2 paper quesstion 8 n june 2010 question 10 part c n jan 2009 question 9 if anyone cn help thnkz

Reply 183

emma3

Does anyone think a difficult geometric seq/series question will come up? :/

Reply 184

ninegrandstudent

Can someone explain Question 5 on the May 2011 paper please?

Its part B I'm confused with - don't know where any of that came from!

Reply 185

Adrianna123

If you need some extra practise on those differentiation shape questions, here's some questions and the markscheme attached
If you need any help then just ask :smile:

PracticalProblems_Differentiation_MS (1).rtf154.3KB

PracticalProblems_Differentiation.rtf111.7KB

Reply 186

The_Pen

Do we need to know the proof for the Sine, Cosine and area of triangle rule?

Reply 187

dslc

Original post by ninegrandstudent

Can someone explain Question 5 on the May 2011 paper please?

Its part B I'm confused with - don't know where any of that came from!

http://www.youtube.com/watch?feature=player_embedded&v=JtO3tNbhkrM#!

Reply 188

Kardy

I need some help with trig angles. I don't like using the quadrant thing, but could someone just tell me a set of rules on how to find all the values for x?

Like for inverse Sin of x, you do 180 - your first value of x. But then what do you do?
Same for cos, I don't know what to do to find the rest of the values.
Tan is easy because it's just +180, +180. Could someone help me out here? :smile:

Reply 189

dslc

Original post by Kardy

To work with these questions I think you have two real modes of approach, illustrated in the picture I have attached.

The first (marked as 2 in the attached image) is to use the quadrant thing, which I would personally really advise but given that you don't like it your only other approach is 1. Some people suggest learning a bunch of rules for each trig graph but there's a reason why this is not a great idea. Would you rather learn about 10 rules for how to work out other values from principal values or, to avoid using the quadrant thing, learn 3 trig graphs instead?

You can work with the symmetry of the trig graphs and your principal value (in my case 30) to find which other values match up. You can see between the bounds I set, only 150 was the other point.

Hope this goes some way to helping

Reply 190

Puloot

guys, could you give me the formula to find sin,tan,and cos.
the one with PV?

Reply 191

wam-bam

Original post by Adrianna123

If you need some extra practise on those differentiation shape questions, here's some questions and the markscheme attached
If you need any help then just ask :smile:

Do you have any other document like this for integration :colondollar:

Thanks

Reply 192

Kardy

Original post by dslc

Ahh, I see. Thank you very much. :wink:

Reply 193

Adrianna123

Original post by Kardy

For inverse sine of x, whatever your answer is you + and - 360 and those are all your solutions (until you get outside of your range) AND you do 180 - the first value of x like you said and also + and - 360 for that.

For cos, you do the inverse cosine of x and whatever your answer is, you + and - 360 from that. You also do the negative version of x and + and - 360 from that.

And for tan just + and - 180.

Hope that made sense :smile:

Reply 194

Adrianna123

Original post by wam-bam