Mathematics: Post your doubts here!

[iKhaled]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_31.pdf

question number 6 (ii) ? how to do it?

hey i figured out the answer to this question,

√10 cos (x-71.57) = cos 2θ + 3sin 2θ and from that we can say that √10 cos (x-71.57)

let x = 2θ and let S = x-71.57 just to make things simpler

now we can say √10 cos S = 2
S = cos^-1 (2/√10)
S = 50.8 and to get another value we will have -50.8

now that S is 2θ-71.57 we can say that,

2θ-71.57 = 50.8 and 2θ-71.57 = -50.8
θ = 61.2 and θ = 10.4

i hope u got it!

 

[Yousif Mukkhtar]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w08_qp_1.pdf
Q10 iii) Can someone explain this?

 

[Rutzaba]

I really hate functions :/

 

[silver slick]

Does anyone have the notes regarding series?

 

[VelaneDeBeaute]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w08_qp_1.pdf
Q10 iii) Can someone explain this?

This is the completing square method thing. If you know that method, this should be a piece of cake for you. Here, http://patrickjmt.com/quadratic-equations-completing-the-square/

 

[princex]

What do you mean by that?
Are you talking about Circular measure?
If so then remember these two formula's.
For the length of arc =theeta x radius (where theeta would be in radian mode)
For area of sector = 1/2 x r^2 x theeta.

i meant angle n circle propertise.shorry

 

[Jspake]

Please help me solve the question above.
Thanks..

I'm reposting this.. please help!!

 

[Silent Hunter]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w05_qp_3.pdf

in Question 9 part (b) ... how to apply binomial on (1 + x^2 ) ^-1 ???

iKhaled whitecorp

anybody?

thank you

 

[Rutzaba]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w05_qp_3.pdf

in Question 9 part (b) ... how to apply binomial on (1 + x^2 ) ^-1 ???

iKhaled whitecorp

anybody?

thank you

convert it into improper fraction or was it proper
who cares bout the name..
do u kno long division?

 

[SalmanPakRocks]

I'm reposting this.. please help!!

Whenever they ask you the reason why the function has an inverse, just write this:
'This is because, f(x) is one to one function.'

 

[Silent Hunter]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s11_qp_31.pdf

Q4 part (ii) ?

JazakAllah

 

[VelaneDeBeaute]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_31.pdf

Q4 part (ii) ?

JazakAllah

Assume 3^y to be x, and solve the third-degree equation !!

Rutzaba Gémeaux

 

[Rutzaba]

gjhjdhcyjrgrchjvctgtvtbvbhygf
Assume 3^y to be x, and solve the third-degree equation !! ivfuvhgegbvfyuevrbj

Umm wch language is this?

 

[Gémeaux]

Umm wch language is this?

hai na aala language? this is called umglum jingalala. (sorry for being off-topic )

 

[Rutzaba]

hai na aala language? this is called umglum jingalala. (sorry for being off-topic )

well al i cn say is

Hdhdbegyw hshsbb jdj hdj hdhegstuieh hahahhaha hdhdhdghsv hd ujdv hsj huidlllwb

 

[salvatore]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_s05_qp_1.pdf
No. 10 (iv)

Please help me solve the question above..

 

[Rutzaba]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_s05_qp_1.pdf
No. 10 (iv)

Please help me solve the question above..

Solve them simultaneously ul get a quadratic equation in the form of k
Do b^2 -4ac and equate it to 0

 

[salvatore]

Solve them simultaneously ul get a quadratic equation in the form of k
Do b^2 -4ac and equate it to 0

Thanks.. but why do you have to solve them simultaneously and use the discriminant?

 

[Rutzaba]

Thanks.. but why do you have to solve them simultaneously and use the discriminant?

Thanks.. but why do you have to solve them simultaneously and use the discriminant?

I hav no answers to the why part

Because the line is making a tangent wd the curve... so both the line n curve wud intersect

 

[salvatore]

I hav no answers to the why part

Because the line is making a tangent wd the curve... so both the line n curve wud intersect

Then you must have checked the marking scheme.. i could do that too
Btw.. a tangent does not intersect the curve..