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Maths P12 !!!!!!!

How Much Minimum You Think Would Be The Curve For grade A For Maths P12

  • 65+

    Votes: 4 6.8%
  • 60+

    Votes: 29 49.2%
  • 55+

    Votes: 20 33.9%
  • or below (which isnt possible as per my thoughts)

    Votes: 6 10.2%

  • Total voters
    59
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my notes r seriously not notes -________-
how to explain :S
we jst work out examples...we dont hve specific notes :S
sorry :S
but chishtyguy has uploaded notes on his thread :) see to it :)
any examples on probability n permutation n combination?
u see i dont hav a proper stats teacher,am appearing on my own,means that i hav self studied the entire as maths on my own n am findin difficulty in few chaps,so if u can help me ,ill be very much thankfull to u!
 
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any examples on probability n permutation n combination?
u see i dont hav a proper stats teacher,am appearing on my own,means that i hav self studied the entire as maths on my own n am findin difficulty in few chaps,so if u can help me ,ill be very much thankfull to u!
u knw im plannin to stare at the paper n the paper stare me for s1 :p
ill help u as much as possible :)
i can help in normal n binomial dist. im useless in P&C :S
 
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10) d^2y/dx^2=24/x^3-4
dy/dx=24/2x^-2-4x+k at y'=0 and x=2 k=11
y=24/2 x^-1-4/2x^2+kx+c at y=13, x=1 c=-8
10i) a curve has y'' = f(x) the curve has a stationary point: y' = 0 at x=2 so we determined
y' = -12x^(-2)-4x + 0 = -12/(2)^2 -4(2) + k 0 = -3 -8 + k ; k=11
Now find y(2), y=12 (2,12) these are the coordinates of stationary point
 
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11) in the stated domain 0 and 2pi
f(x)=6-4cos(1/2x) 6-4cos(1/2x)=4 -4cos(1/2x)=4-6=-4cos(1/2x)=-2 Cos(1/2x)=1/2 Cos^-1(1/2)=60 1/2x=60 x=120
Cosine lies between -1 and 1
so 6-4(1) and 6-4(-1) so the range of values are 2 and 10
Y=cosx
y=4cosx
y=-4cosx
y=6-4cosx
y=6-4cos(1/2x)
The vertical translation is +6 units and the amplitude is -4 and the period is 4pi
 
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