Maths, Addmaths and Statistics: Post your doubts here!

[asadalam]

Is this correct

 

[Faizan Muhammmad]

Is this correctView attachment 43851

yep

 

[funky brat]

Is this correctView attachment 43851

Isn't this shaded in the mark scheme?

 

[asadalam]

Isn't this shaded in the mark scheme?

Agar hota to pochta =p

 

[funky brat]

c = b(a – b)
........--------
..........a

How to make a the subject?

(P.S. Ignore the dots. It's just b(a-b) divided by a).

ca= ab-b^2
ca-ab=-b^2
a(c-b)= -b^2
a= -b^2/(a-b)
Is that correct?

 

[Faizan Muhammmad]

exploded diper
the link:
http://math.stackexchange.com/questions/9659/is-the-void-set-a-proper-subset-of-every-set

 

[afrolina]

Question: Is there any way to get an A* in CIE O level without much practice if concepts are clear?

 

[asadalam]

MS says:
a = b^2
.....-----
......b - c

Link to paper/question?

 

[afrolina]

Why not practice? There is still plenty of time.

Not really, I have other subjects too!

 

[funky brat]

MS says:
a = b^2
.....-----
......b - c

Oh sorry a^2/b-c he hai, I made an error while writing.

 

[afrolina]

Worried about graphs and transformation. Rest are pretty okay.

 

[funky brat]

Thanks alot :3 How is everyone's prep? Mine's awful - Transformation, Graphs and Mensuration still to go (Though I completed them in 1 hr during Mocks :3). Was busy for a few days :/

Sab sey achi meri aur era30amy ki hai. :')

 

[funky brat]

Worried about graphs and transformation. Rest are pretty okay.

Manhoosest thing ever. .-.

 

[Faizan Muhammmad]

Sab sey achi meri aur era30amy ki hai. :')

abb kitnay aa jatay hain?
I can bet atleast more than 75 after these days

 

[exploded diper]

discussion jaree hai bhai, intezar kro

theek hai jab tum logon ko samajh aa jaye to mujhay bhi bata dena...

 

[funky brat]

abb kitnay aa jatay hain?
I can bet atleast more than 75 after these days

Kiskay meray?
*brb laughing*

 

[Dream.Eater]

Could someone tell me how to do this ASAP?????
Thanks in advance!!!!
Ps-i need to know the method not only the answers....

***amd*** Awesome12 exploded diper Asad.Babur
funky bratasadalam

 

[Abdul Hanan]

Solved it anyway.

It's
ca = ba - b^2
ba - ca = b^2
a (b-c) = b^2
a = b^2 / b-c

I forgot about factorization here.

And Asad - it's M/J 12 - P12.Q11 b

how in step 2 did b^2 get +ve and ca -ve ....

 

[A.Sagheer]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w13_qp_11.pdf
QUESTION 15
HOW TO FIND Y?

 

[exploded diper]

how to do a (ii)

asad ***amd*** Faizan Muhammmad Awesome12
do this also