Maths, Addmaths and Statistics: Post your doubts here!

[sweetiepie]

Annuity is used in .
A function
B equation
C Mathematics of finance
D Simple Functions

 

[sweetiepie]

The Range of f = {(1,a), (1.b), (1,c) is
A {1,1}
B {a}
C {b}
D {a b C )

 

[Saad Mughal]

Annuity is used in .
A function
B equation
C Mathematics of finance
D Simple Functions

Mathematics of Finance.

 

[fatima0000]

http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_w10_qp_22.pdf
Q no 10 (b) (iii)

 

[asma tareen]

multiply the matrix with the co ordinates sorry dunno how to write a matix here

 

[fatima0000]

http://papers.xtremepapers.com/CIE/...(Calculator Version) (4024)/4024_w08_qp_2.pdf
Q 11 (b) (iii)

 

[Suchal Riaz]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w08_qp_2.pdf
Q 11 (b) (iii)

distance of A from x-axis is 3 units, the distance of A from A'/D is 6. so factor is 2. distance of B from x-axis is 1, so it will move two units to the right. so coordinates of E will be (3,1)
shear does not change the area so area of ABC will be same as DEF. so 2*2/2=2unit²

 

[TheStallion-Reborn]

sumone please help me with upper bound and lower bound +rotational symmetry. and if there is a way to to determine the lines of symmetry through claculation...

 

[Saad Mughal]

sumone please help me with upper bound and lower bound +rotational symmetry. and if there is a way to to determine the lines of symmetry through claculation...

Go to Page 18 and Page 63.

 

[fatima0000]

http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_w11_qp_12.pdf
Q 27 part b
how do we come to know that invarient line is "x = -1"

 

[xpfaddict]

10(1-x/10) – (10-x) – 1/100 (10-x) =0.05

plx sove this

 

[Saad Mughal]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w11_qp_12.pdf
Q 27 part b
how do we come to know that invarient line is "x = -1"

Apply the formula of Scale factor = Distance of image from invariant/Distance of object from invariant.
Let Distance of object from invariant = x
2 = x+2/x
2x = x + 2
x = 2
Distance of object from invariant = 2
Therefore, invariant line = 1-2 = -1
x= -1.

 

[Saad Mughal]

10(1-x/10) – (10-x) – 1/100 (10-x) =0.05

plx sove this

Solution:
10(1-x/10) - (10-x) -1/100 (10-x) = 0.05
1 - x - 10 + x (-10+x/100) = 0.05
-900 - 10 + x = 5
x = 915

 

[TheStallion-Reborn]

what is a modal class??

 

[AhsanAfzal]

what is a modal class??

The class which have most frequency

 

[AhsanAfzal]

how was the part (i) done?

 

[AhsanAfzal]

Why is for velocity of plane in still air, velocity of wind being subtracted? the formula is V(p)=V(p/w)+V(w) Suchal Riaz Saad Mughal

 

[Suchal Riaz]

Why is for velocity of plane in still air, velocity of wind being subtracted? the formula is V(p)=V(p/w)+V(w) Suchal Riaz Saad Mughal

u r right

 

[AhsanAfzal]

u r right

So the mArking scheme is wrong? examiner report also says that we have to subtract and addition was common mistake.

 

[Saad Mughal]

Why is for velocity of plane in still air, velocity of wind being subtracted? the formula is V(p)=V(p/w)+V(w) Suchal Riaz Saad Mughal

The Resultant Velocity, i.e. Vp = Distance/Time = 240i + 100j.
The formula is Vp = Vp/q + Vq.
Just rearrange the formula,
Vp/w = Vp - Vw = 240i + 100j + 60i - 60j = 300i + 40j.
Hope that helps.