Mathematics: Post your doubts here!

[syed1995]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s12_qp_12.pdf

Question 7 part b..

I mean I solved it but didn't really get the concept behind it..

Can someone solve that question for me?

 

[Nibz]

I'd really appreciate if someone can direct me to some vectors notes that cover all or most of the A'level p3 sy. I need them for someone else.

I hope I'm not late.

Here: http://www.mediafire.com/?6hwfccjmuht9cah

 

[Alice123]

I hope I'm not late.

Here: http://www.mediafire.com/?6hwfccjmuht9cah

i'm not a member there, so can u please upload it in pdf form? Sorry for the inconvenience

 

[Nibz]

i'm not a member there, so can u please upload it in pdf form? Sorry for the inconvenience

Of course. =)

 

[iKhaled]

I hope I'm not late.

Here: http://www.mediafire.com/?6hwfccjmuht9cah

thanksss i needed them too! if u have some complex number notes then pls do send them too

 

[Alice123]

Of course. =)

Of course. =)

Thanks

 

[Rutzaba]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s12_qp_12.pdf

Question 7 part b..

I mean I solved it but didn't really get the concept behind it..

Can someone solve that question for me?

see in gp
the formula of term t s given by ar^(n-1)
first term=a
2nd term n2= ar^(2-1)= ar
3rd term n3= ar^(3-1)= ar^2

the second term is nine less than the frst
a- ar=9.....i
the second term and thrd term add up to give 30
ar+ ar^2 =30
solve simultaneously

 

[daredevil]

daredevil .. lemme give yu a hint..
whenevr u get a tough question whch u think is out of syllabus... be sure that that question is the simplest one of all the questions in the paper

ooh thanks Mustafa! that actually was a TIP and a good one at that

 

[syed1995]

see in gp
the formula of term t s given by ar^(n-1)
first term=a
2nd term n2= ar^(2-1)= ar
3rd term n3= ar^(3-1)= ar^2

the second term is nine less than the frst
a- ar=9.....i
the second term and thrd term add up to give 30
ar+ ar^2 =30
solve simultaneously

haha .. one gets the same answers though. this methods clears my mind up! Thanks

 

[MustafaMotani]

syed1995 i dont know what codone means.. but i would recommend u give 27..
reason : if a=1.5 then second term = -7.5 (negative)
since question clearly says that all the terms are positve i would recommend 27

 

[Rutzaba]

haha .. one gets the same answers though. this methods clears my mind up! Thanks

anytime... unless its four in the morning

 

[sma786]

Does anyone have the 2013 paper 1 specimen?!

 

[syed1995]

Does anyone have the 2013 paper 1 specimen?!

specimen paper only comes when there is a big change in the syllabus or paper pattern.. which there hasn't been .. so no specimen papers..

 

[syed1995]

syed1995 i dont know what codone means.. but i would recommend u give 27..
reason : if a=1.5 then second term = -7.5 (negative)
since question clearly says that all the terms are positve i would recommend 27

Yea that's why i rejected the answer the instant i got it. but got confused after seeing the MS.

 

[syed1995]

anytime... unless its four in the morning

haha so true.

 

[MustafaMotani]

Yea that's why i rejected the answer the instant i got it. but got confused after seeing the MS.

then better not see it..

 

[sma786]

specimen paper only comes when there is a big change in the syllabus or paper pattern.. which there hasn't been .. so no specimen papers..

thank god, means the paper is going to be similar to the previous ones

 

[syed1995]

thank god, means the paper is going to be similar to the previous ones

I hope not.. the 2012 papers were extremely difficult!

 

[abruzzi]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s12_qp_13.pdf
Please help me with question no. 11(iv).. I don't understand how the marking scheme did it.

 

[nafis shahRiyar]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s12_qp_13.pdf
Please help me with question no. 11(iv).. I don't understand how the marking scheme did it.

plot g(x) and then reflect it in x=y line in order to get g(x^-1)