Maths, Addmaths and Statistics: Post your doubts here!

[MustafaMotani]

ratio of areas with vectors.

just keep in mind that when finding ratios of areas of triangles in vectors two things can be used. :

1) similar triangles
2) ratio of base if heights are same

if u can prove that triangles are similar smply square the ratio of their sides ( i know u must know this)\

If heights are same then its logical that height will be cancelled and ratios of height will ultimately be ratio of bases..
tell me any ques.. ?

 

[Mayedah]

xD are u serius.. ?

I jst gave the reason ...u gave the elaboration

 

[MustafaMotani]

ratio of areas with vectors.

I will help u later ... lyt janay ka time hogaya hai.. tab tak dekh lo shayd tumhay koi aur acha samjha de..

 

[MustafaMotani]

I jst gave the reason ...u gave the elaboration

I dont get ur reason as well ! see the diagram again..
and besides u cant refer to the next part..

 

[syed1995]

I will help u later ... lyt janay ka time hogaya hai.. tab tak dekh lo shayd tumhay koi aur acha samjha de..

aap say acha? na baba na...

 

[HarisLatif]

http://www.xtremepapers.com/papers/...Calculator Version) (4024)/4024_w11_qp_12.pdf I need help in question 27 last part . shouldn't the y-axis be invariant line? but the mark scheme says x= -1.

 

[MustafaMotani]

aap say acha? na baba na...

I m flattered..

 

[syed1995]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w11_qp_12.pdf I need help in question 27 last part . shouldn't the y-axis be invariant line? but the mark scheme says x= -1.

Yeah MustafaMotani answer that one! I didn't get it either.

 

[HarisLatif]

And in this one too http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w11_qp_22.pdf question no 3 part b (i)

 

[MustafaMotani]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w11_qp_12.pdf I need help in question 27 last part . shouldn't the y-axis be invariant line? but the mark scheme says x= -1.

dost itni dair se wahi sawal per larai ho rahi thi...
x= -1 is ryt, q k woh he line hai jo strech factor 2 de raha hai

 

[MustafaMotani]

Yeah MustafaMotani answer that one! I didn't get it either.

strecth factor pata hai kia hai.. ??

 

[syed1995]

dost itni dair se wahi sawal per larai ho rahi thi...
x= -1 is ryt, q k woh he line hai jo strech factor 2 de raha hai

stretch factor ko bhi dekhna hota hai ?? .. sala kis kis cheez ko dekhna hota hai :\

 

[MustafaMotani]

stretch factor ko bhi dekhna hota hai ?? .. sala kis kis cheez ko dekhna hota hai :\

is sawal mein stretch factor ko he dekhna tha..

 

[syed1995]

strecth factor pata hai kia hai.. ??

nahi bhai .. hum jesay ko kia pta ye kis chirya ka naam hai .....

 

[MustafaMotani]

nahi bhai .. hum jesay ko kia pta ye kis chirya ka naam hai .....

hahahahahaha

 

[HarisLatif]

http://www.xtremepapers.com/papers/...Calculator Version) (4024)/4024_w11_qp_21.pdf About probability. Question no 4 part c. i'm getting the answer 1/125 but the mark scheme says 1/25

 

[HarisLatif]

strecth factor pata hai kia hai.. ??

strecth factor pata hai kia hai.. ??

han wo to 2 hai

 

[MustafaMotani]

And in this one too http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w11_qp_22.pdf question no 3 part b (i)

AOB = 72 (360 / 5)
ACB = 360 - 72 - 90 - 90 = 108
reflex ACB = 360 - 108 = 252

Perimeter = 5 x 252/360 x 2 x pie x r = 7pie x r
k = 7

 

[MustafaMotani]

han wo to 2 hai

yes u know ke stretch factor kia represent karta hai.. ??

 

[MustafaMotani]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w11_qp_21.pdf About probability. Question no 4 part c. i'm getting the answer 1/125 but the mark scheme says 1/25

marking scheme is ryt...
kisi ek number ki probability 1/125 hai
q k yaha per 5 numbers hai to inki probability
5 x 1/125 = 1/25

 

[syed1995]

marking scheme is ryt...
kisi ek number ki probability 1/125 hai
q k yaha per 5 numbers hai to inki probability
5 x 1/125 = 1/25

seedha seedha permutation combination use karo na ..