Mathematics: Post your doubts here!

[Alice123]

applepie1996 could you help me out please ??

When they ask us to find the angle between two lines or two planes, we use cos theta; and when they ask for angle between a line and a plane, we use sin theta
Lemme know if u still dont get it.... n sorry for the late reply, dint see your post earlier

 

[Alice123]

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s12_qp_33.pdf
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s12_ms_33.pdf
Qs10b) sum1 please correct my part(i) if im wrong... littlecloud11 or any p3 expert

 

[littlecloud11]

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s12_qp_33.pdf
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s12_ms_33.pdf
Qs10b) sum1 please correct my part(i) if im wrong... littlecloud11 or any p3 expert

It's correct

 

[Esme]

hope u got it

When they ask us to find the angle between two lines or two planes, we use cos theta; and when they ask for angle between a line and a plane, we use sin theta
Lemme know if u still dont get it.... n sorry for the late reply, dint see your post earlier

It's ok..
Yep got both of them !! Thank you so very much !! May Allah bless you Ameen

 

[ABACOND]

Please help me with Mathematics P31 November 11 Question 3. The detailed working, since it is not clearly givn in the marking scheme. I will appreciate it.

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w11_qp_32.pdf

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w11_ms_32.pdf

 

[Silent Hunter]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w08_qp_3.pdf

Rutzaba
Alice123
applepie1996
Esme

or anyone ? thanks alot ..... Its question 8 (iii) ..... after integrating ..... how to get the constant cuz only value of h = 1 and the dh/dt is given ? :\

thanks again

 

[Esme]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w08_qp_3.pdf

Rutzaba
Alice123
applepie1996
Esme

or anyone ? thanks alot ..... Its question 8 (iii) ..... after integrating ..... how to get the constant cuz only value of h = 1 and the dh/dt is given ? :\

thanks again

The question says.. "initially the tank is empty" so I assumed that when t=0, h=0. So you get constant=0.

 

[Alice123]

Esme Hope thjs helps

 

[Esme]

Please help me with Mathematics P31 November 11 Question 3. The detailed working, since it is not clearly givn in the marking scheme. I will appreciate it.

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_32.pdf

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w11_ms_32.pdf

Okay...Do you know the long division method ? Cuz that's what I used. You divide P(x) by (x^2 - x + 1). Then you get a remainder in terms of a. Then you equate remainder=0.
If it's still unclear, I can take a picture of my workings.

 

[Esme]

Esme Hope thjs helps

Thanks.. yeah I've been through this, but the past paper questions are slightly different sometimes

 

[ABACOND]

Okay...Do you know the long division method ? Cuz that's what I used. You divide P(x) by (x^2 - x + 1). Then you get a remainder in terms of a. Then you equate remainder=0.
If it's still unclear, I can take a picture of my workings.

Yes, I know the long division method, however it is still unclear. Please show me your working; I would appreciate it greatly.

 

[biba]

The complex number u is defined by u = (1 + 2i)^2 / (2+i)

(i) Without using a calculator and showing your working, express u in the form x + iy, where x and

y are real. [4]

(ii) Sketch an Argand diagram showing the locus of the complex number s such that |s − u| = |u|.
[3]


can sum1 help me with the argand diagram ?

 

[chocolatelover]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w12_qp_31.pdf
Question 5 ii, iii, iv

 

[chocolatelover]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w12_qp_31.pdf

& queston 8 please. Thankyou!

 

[MKh@lid]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_s05_qp_1.pdf
Q4 , (ii)
I know stupid question , but need help. I don't get it what do they mean when they say "no term in x^2"

 

[Fatima18]

Hey guys.Isn't anyone in here doing stats? :S

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s05_qp_1.pdf
Q4 , (ii)
I know stupid question , but need help. I don't get it what do they mean when they say "no term in x^2"

Assalam-o-alaikum wr wb..

​

 

[MKh@lid]

Walaikumassalam wr wb.
JazakAllahu Khairen Coolio!!

 

[Esme]

Yes, I know the long division method, however it is still unclear. Please show me your working; I would appreciate it greatly.

Here you go

 

[ABACOND]

T

Here you go

Thank you very much for the effort, I appreciate it and will pray for you.

I just realised I had copied the question wrong(taken the x^3 as x^2). lol.