[CIE] All Pure Mathematics (P1, P2 and P3) doubts here !

[Alpha]

I recognize this question from a p4 paper I did today. Attached.

I did that too, it's the first part.

I asked it on YA, you might wish to check it out:
http://answers.yahoo.com/question/index;_ylt=Ag99ppCNFePLsrjxoLIt3mTsy6IX;_ylv=3?qid=20111015052949AAvMuAv

There too, my question remain unanswered though. Perhaps the ER's could be clearer. 

[astarmathsandphysics]

Give me time to get up

[Alpha]

Give me time to get up

Sure.  



 

[astarmathsandphysics]

HERE

[Alpha]

HERE

30.8 is the answer. You are using the same method as I did. Not the one used by Cambridge. It's okay. Most important is that I get the answer.
Thank you for your time +rep.

[cs]

Need help please

Paper 3

[cs]

June 2010 p31,
q7 part ii

which shaded area is correct, thanks

[astarmathsandphysics]

The first one above

[astarmathsandphysics]

For the second shade the rgion in pink. It is closer to z=1 than z=i

[cs]

Thank you very much

[preity]

could someone pls help me with the may/june 07 q3(p3)?

[astarmathsandphysics]

No probate

[curiousguy]

Can any one please give me a website where in there are tutorials of p1 as level, that could help me finish up the syllabus.

[astarmathsandphysics]

I have written a set of notes. I think p1 is equivalent to c1
http://www.astarmathsandphysics.com/a_level_maths_notes/a_level_maths_notes_c1_menu.html

[Most UniQue™]

Can someone help me with these questions:

1.A funnel has a circular top of diameter 20cm and a height of 30cm. When the depth of liquid in the funnel is 12 cm, the liquid is dripping from the funnel at a rate of 0.2 cm^3/s. At what rate is the depth of the liquid in the funnel decreasing at this instant?

2. The sum of the first twenty terms of an arithmetic progression is 50, and the sum of the next twenty terms is -50. Find the sum of the first eight terms.

3. Determine the coefficient of p^4q^7 in the expansion of (2p-q)(p+q)^10

Thanks!:D