Qualification > Math

Math P1 Questions/Predictions

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nipuna92:

--- Quote from: Padapop on May 11, 2010, 10:40:33 am ---oh..

so for example, if the first line's gradient is = 2. that would be 1i + 2j. And the second line's gradient is 3/2, that would be 2i + 3j.

(1i + 2j) . (2i + 3j) blah blah blah the dot product formula.

U could try it, but i think nid's one is standard mark scheme thing, so that way is more standard. Ull get the same answer thou.

--- End quote ---

thanx got it ;) ;)

Recko:
Guys, i finished all papers,and i cracked every single question! and i know everything!

what do you think i should do now?

astarmathsandphysics:
Start P2
Jump for joy
Write to your President. He's a Nutter.

Recko:
hahaha start P2? i still didnt do the exam sir :P and no thanks ill pass :P

hahaha my president?

sir can you please help me out in oct/nov 06 question 9 i) and ii)

nid404:
What am i here for ? ;)

9)total surface area=200

10xy(the 2 sides) + 24x2(the 2 triangles)=200

10xy=200-24x2
     y=200-24x2/ 10x

ii) V= 12x2y  (area of cross-section into length) Area of cross section=area of triangle and length=y

now from the above eqn we know  y=200-24x2/ 10x

substitute this in V

12x2(200-24x2/ 10x)

this gives 240x-28.8x3

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