Qualification > Math
IGCSE MATHS Doubts
haris94:
--- Quote from: dsiddiqi11 on May 13, 2010, 10:31:10 am ---guys for the boris speed question, i didnt multiply my answer by 2 to get the max speed, so how many marks do i get, i showed all of the working
--- End quote ---
y do u hv to multiply the answer by 2 ???
i dont remember doing that
Dibss:
--- Quote from: dsiddiqi11 on May 13, 2010, 10:31:10 am ---guys for the boris speed question, i didnt multiply my answer by 2 to get the max speed, so how many marks do i get, i showed all of the working
--- End quote ---
um what multiplying by2?
you find alonso's total dist. which was 130
then you do 1/2 x v x 16 = 130
v=16.25
Choc.Kits:
--- Quote from: haris94 on May 13, 2010, 10:24:01 am ---the gradient was -3
cause the equation of parallel line was 3x+y=18
so it becomes y=18-3x
the equation finally is
y=-3x+14
--- End quote ---
Did that! Amazzzzzzing! :)
Choc.Kits:
And its true, the first question, the rotational symmetry was 0. Cause you cant have a rotational symmetry of 1.
As far as i know, i lost out on the sinx - cosx = 0.5... i messed that sh*t up....
Shazizzzle:
And I messed the gradient sh*t up.
So... 1 or 2 marks, either way, that's sh*t. :/
Crap.
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