Paper 12 maths

[mikey3535]

i got 0 and 64/9. ????

me 2 buddy

 

[mikey3535]

what did ppl get for the unit vector question? i cnt remember the i j and k values, bt did any1 get route64 as the magnitude, tthus the divisor ?

 

[Scafalon40]

Did great.

 

[iFuz]

Mine went good! MA!
I guess percentile would be in 50s this time

 

[shayreeikg]

what was the answer to a.p? 2and 9 ? and the first question was it 12pi ?

 

[hateexamz]

yup 1st wz 12 pi

 

[confused123]

yup 1st wz 12 pi

no it was 6 Pi

 

[Iadmireblue]

I got 12 pi as well and for the vector question i got root 61 and for the values of k mine were something like -5/8 and +5/8

 

[sadman]

I got 12!!!! and i checked it with a calculator, it gave me 12

 

[soccerprinc3]

what about the G.P? did anyone get a=14?

 

[egy]

what about the G.P? did anyone get a=14?

???????????????????????????????

 

[sadman]

uffff guys stop crying over it
now
study for the further exams

 

[soccerprinc3]

???????????????????????????????

i'll take that as a no >.<

 

[Majed Kaaki]

urghhh !! i just knew how to solvee the AP it isss SOOOO FOR GRADE 1 !!!!
they just mixed uss with the equation they gave uss ! i hate themmmm :'( !!!!

 

[muhammadbinaziz]

the sum of n=1 was equal to the first term itself!!!!!!

 

[123add1]

i got 0<k<64/9.and yeah it was 12 pi.i got 27 as the ans of gp and 9 and 2 for ap.the coordinates of b were 2,2

 

[123add1]

How did u get 2??
a was 9 thts fyn
but see Sn=n^2 + 8n putting the n=2
S2 = 36
now using the summation formula 36=2/2(2(9) + (2-1)d) which gives d = 18...

how did u calculate n??? and n^2 +8n when n=2 gives 20

 

[anonymous123]

nvm i was wrong

 

[123add1]

dnt worry it was only three marks.u wuld probably get atleast 1 mark for method.ask those who lost 10-15 markx.so b happy and prepare well for m1/p3/s1

 

[123add1]

nvm i was wrong

what ans did u get for the area of the metal plate??