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

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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

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