Mathematics: Post your doubts here!

[David Hussey]

Any one plz help me with this question,it's urgent
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_33.pdf
Q4 part II.
Thank u

use your part i answer
1/(2cos(x-1/6pie))6^2
square it u should get
1/4cos^2(x-1/6pie)
take 1/4 outside, u can now write1/cos^2(x-1/6pie) as sec^2(x-1/6pie)
integrating is tan(x-1/6pie)
substitute boundary values and get the answer

 

[A star]

best of luck my friends may we all get A*s

 

[Manobilly]

guys ask dua its an easy paper :/
May Allah make it easy for all us Ameen

Ameen

 

[Manobilly]

best of luck my friends may we all get A*s

InshaAllah

 

[Mayedah]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w12_qp_33.pdf
QUESTION 7 anyone ?

 

[moonangel996]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w12_qp_33.pdf
QUESTION 7 anyone ?

This is a doubts for me too !! and till now
but someone solved it and wrote this, hope this help

sorry couldn't upload my working but i can give you some tips.
Take cos^3(2x) as (cos2x)(cos^2(2x)
Convert the cos^2(2x) into (1-sin^2(2x)) using the identity
Differentiate u (sin2x) to get (cos2x) and make dx the subject
And then replace all your sin2x and dx with u and du.
And finally proceed with normal integration.
ii) Whatever value you get for A. Multiply it by 40 and equate it with k(pi) to get the value for k.
I guess pi will cancel out.

 

[Ahmed Aqdam]

Great. Can you post the solution?

No solution. Got the answer by trial and error.

 

[Hassan Ali Abid]

https://www.xtremepapers.com/community/threads/mathematics-p32-gt.33966/#post-796829

 

[ZaqZainab]

Well, that is an intelligent approach. Weblink ?
But,
I didn't get the identity derivation
the identity in its final form was y! = x! (y-1)! where x and y are both different variables but the identity got a signle variable n . How is that possible?

LOL don't ask me i was just showing what i found
this is a crappy question

 

[Talha Irfan]

LOL don't ask me i was just showing what i found
this is a crappy question

-_______-

 

[Crimson-Saint]

private or school?

school

 

[Rutzaba]

school

they can show u separately

 

[wohooo]

Can anyone help me for S1
Question;
A certain town uses license plates consisting of two letters of the alphabet followed by four digits.how many different license plate numbers can be formed?
Answer 6760000

 

[ZaqZainab]

Can anyone help me for S1
Question;
A certain town uses license plates consisting of two letters of the alphabet followed by four digits.how many different license plate numbers can be formed?
Answer 6760000

is repeating the alpha pets allowed and the number repeating allowed?

 

[wohooo]

I don't know.that all the question.let say if allowed repeating how was the solution.i did 26p2x10p4x2.but cannot get the answer

 

[wohooo]

is repeating the alpha pets allowed and the number repeating allowed?

I don't know.that all the question.let say if allowed repeating how was the solution.i did 26p2x10p4x2.but cannot get the answer

 

[ZaqZainab]

26*26*10*10*10*10
wohooo

 

[ZaqZainab]

I don't know.that all the question.let say if allowed repeating how was the solution.i did 26p2x10p4x2.but cannot get the answer

26P2 means you are taking any 2 from 26 of this but they can't be the same that mean you are not allowed to repeat
that *2 will just mean they will just change there place
for example
A and B <--- cant be same cause you have to choose 2 different from 26 if you use 26P2
then when you write the equation with a *2
it just means
B and A there places change

 

[wohooo]

Can

26*26*10*10*10
wohooo

u explain

 

[wohooo]

Why u multiply 10 3 times why not 4 times.the question followed by four digits??.sorry i dobt understand

Can

u explain