Mathematics: Post your doubts here!

[immie.rose]

well part ii you found out there are four roots in a cycle that is 0-2p well there are 5 such cycles in 10p to 20p (20-10)/2=5
so if 4 : 1
theta: 5 sycles cross multiply you will get 20

JazakAllah

 

[shafayat]

Help Me please ! the part one of this question :/

 

[A star]

Help Me please ! the part one of this question :/

is it p1?

 

[shafayat]

3 The first three terms in the expansion of (1 − 2x)^2(1 + ax)^6, in ascending powers of x, are 1 − x + bx^2.

Find the values of the constants a and b. [6]

I don't know how to multiply after expansion !! please can anyone help ?

 

[shafayat]

is it p1?

yeah !

 

[A star]

Help Me please ! the part one of this question :/

parti r= 1/(1/3tan x) hence r=3/tan(x)^2 it must be r must be less then 1 to be convergent hence
3/tan(x)^2 <1 hence tanx < under root 3 hence x< tan^-1 (under root of 3 ))
am i rite?

 

[iKhaled]

3 The first three terms in the expansion of (1 − 2x)^2(1 + ax)^6, in ascending powers of x, are 1 − x + bx^2.

Find the values of the constants a and b. [6]

I don't know how to multiply after expansion !! please can anyone help ?

how man..u dont know how to multiply 2 brackets..like for example u never ever multiplied (1+3x)(1+2x)..i dont think so :S

 

[shafayat]

g(x) = 8 − (x − 2)^2, for k ≤ x ≤ 4, where k is a constant.
(iii) find an expression for g−1(x),

how to find g inverse? Cuz I have no idea y they don't take plus or minus when they square root ! they only take plus , can someone explain me ? please

 

[shafayat]

how man..u dont know how to multiply 2 brackets..like for example u never ever multiplied (1+3x)(1+2x)..i dont think so :S

duhh Multiplication and then how to equate them ? if you can please explain me how to find a and b please

 

[shafayat]

parti r= 1/(1/3tan x) hence r=3/tan(x)^2 it must be r must be less then 1 to be convergent hence
3/tan(x)^2 <1 hence tanx < under root 3 hence x< tan^-1 (under root of 3 ))
am i rite?

LoL I don't know what convergent means ! that's the problem

 

[iKhaled]

duhh Multiplication and then how to equate them ? if you can please explain me how to find a and b please

alright man first of all you have to expand (1+ax)^6 using the binomial theorem ( i guess u have learnt that as it is part of ur syllabus) but not all of it like expand it up to the term x^3 onlyyy then expand (1-2x)^2 and multiply it with the answer u got when u did the binomial theorem..once u get an answer tell me..ok ? if u dont know how to use the binomial theorem then tell me also

 

[A star]

LoL I don't know what convergent means ! that's the problem

what is the answer check the ms or tell which year u toook it from

 

[PANDA-]

Guys, I have a question.
What is the most difficult P1 paper you have solved... ever?

 

[A star]

Guys, I have a question.
What is the most difficult P1 paper you have solved... ever?

2012 try al variants both years

 

[iKhaled]

Guys, I have a question.
What is the most difficult P1 paper you have solved... ever?

haha u want the hardest paper everrrr? then try 2012 may june 22..damn i did that paper in may june and i had to take math again because of its difficulty

 

[PANDA-]

haha u want the hardest paper everrrr? then try 2012 may june 22..damn i did that paper in may june and i had to take math again because of its difficulty

I did that, it was easy compared to november 11 p12. I couldn't even finish it, it exhausted me.

 

[ABACOND]

Can anybody please help me with 2 questions asap? Both are from the same paper. N12 P32 Q6 and Q8(i).

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w12_ms_32.pdf
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w12_qp_32.pdf

 

[PANDA-]

2012 try al variants both years

Currently doing just that.

 

[ShreeyaBeatz]

hello,
i need help on Question no 1 of 9709/11/m/j/10 (may june 2010 paper 11)
Thank you
please do reply!

 

[GorgeousEyes]

Please Nov2012 v.13 no.6 i . no.7 ii , 8 iii ) , 9 all , 10 iii
11 ) ii and iv .. this paper is so hard for me