Maths, Addmaths and Statistics: Post your doubts here!

[shezi1995]

Modulas forumla is allowed i have seen soo many marking schemes say that it applies the modulas formula . KTBFFH

Just the reason Why I was asking as I have also seen this formula somewhere in a mark scheme I cant remember.

 

[thughamza]

Ohh Dont go in the reasons bro.Reasons are for starting of the term not a couple of days before exams

 

[syed1995]

Ohh Dont go in the reasons bro.Reasons are for starting of the term not a couple of days before exams

so true.

 

[Spidey21]

Ohh Dont go in the reasons bro.Reasons are for starting of the term not a couple of days before exams

which modulas formula are you talking about??

 

[HarisLatif]

x can never be negative here!!! you see this is because when we take out of modulus, it will be positive always! multiplying x by 2 must therefore to be +ve, so x must be +ve

can you please show me the graph?

 

[ashiqbal]

can you please show me the graph?

 

[HarisLatif]

View attachment 11222

thanks a lot

 

[asd]

View attachment 11222

What's the equation? y=|(x-5)^2| ?

 

[asaadfazal]

I'm getting the same answer as yours. There may be something wrong with the marking scheme.

hmm Okay and thanks for the reply

 

[MustafaMotani]

H U M = students who study history OR maths
H n M = students who study History AND maths.
these are correct. END OF DISCUSSION

actually it isn corrct H U M means history or maths or both

 

[MustafaMotani]

in chapter 1 , sets.
Union means OR
Intersection means AND.
Right ?

unions means OR as wells as AND

 

[MustafaMotani]

Somebody please help me in these questions.

derivate lnx
it will be d/dx = 1 / x
then insert e and reciprocate the ans wid negative sign to get gradient of normal
it will be -e.
Find equation using this gradient and point (e,1)
it will be y = -ex+e^2+1
put y=0
x will be e + 1/e thus Q(e+1/e, 0)

Either part

its integrate has to be e^x(cos x + sin x)/2
insert upper limit as pie/2 and lower as 0 u'll get 1.91 unitssquare
subtract area of triangle from it (0.5 x 1 x 1) u'll get 0.5
ans u ll get will be 1.41

 

[polokhan]

can anyone solve last question(11 or) oof this paper plz its urgent........................
http://www.xtremepapers.com/papers/...ematics - Additional (4037)/4037_w09_qp_2.pdf

 

[Waleed007]

Can Any one Solve this:
(a) A car decelerates uniformly from 20 m/s to 5 m/s in 25 seconds..
Calculate the retardation.
(b) Express 20 meters per second in kilometers per hour.

 

[Executor]

Can Any one Solve this:
(a) A car decelerates uniformly from 20 m/s to 5 m/s in 25 seconds..
Calculate the retardation.
(b) Express 20 meters per second in kilometers per hour.

Dude this is simple physics
Anyways for (a)
Subtract 20 from 5 and then Divide it by 25, this will give you a negative value because its decelerating
for (b)
Multiply 20 with 3600 and then divide it by 1000.

 

[MustafaMotani]

can anyone solve last question(11 or) oof this paper plz its urgent........................
http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Mathematics - Additional (4037)/4037_w09_qp_2.pdf

D k cordinates to mid point se nikal jaege
Mid point of AC = (2,5)
then mid point of BD is equal to that of AC is se D aega (-4,9)
E vectors se aega
DO + OE = 1/4 (DO + OB)
E aega (-1,7)
Area of parellogram ABCD = b x h = 10 x 8 = 80 squnits
area of trapezium will be 1.5 x 80 = 120 sq units
F ka y cordinate is 7 same as E
then
area of trapezium = 0.5 (sum of AB and EF) x h (height is 6 (7-1)
120= 0.5 x (10+x+1) x 6
x = 29
F (29,7)

Pheww

 

[HarisLatif]

While doing the questions regarding integration and differentiation is it necessary to use calculator in radian mode? I saw many questions in kinematics where the working is carried out in radians. Please Help.

 

[AlphaBeta]

Re: O'level Maths, Addmaths and Statistics help available he

Thank you!

can i have maths syllabus D notes pls would be greatful

 

[AlphaBeta]

D k cordinates to mid point se nikal jaege
Mid point of AC = (2,5)
then mid point of BD is equal to that of AC is se D aega (-4,9)
E vectors se aega
DO + OE = 1/4 (DO + OB)
E aega (-1,7)
Area of parellogram ABCD = b x h = 10 x 8 = 80 squnits
area of trapezium will be 1.5 x 80 = 120 sq units
F ka y cordinate is 7 same as E
then
area of trapezium = 0.5 (sum of AB and EF) x h (height is 6 (7-1)
120= 0.5 x (10+x+1) x 6
x = 29
F (29,7)

Pheww

dude can i hav maths notes

 

[AlphaBeta]

After the initiative taken by Math_angel in the IGCSE section, I have made this topic for students of O'levels. You can post any question or any problem here and me along with other XPF users will try to help you as soon as possible. This topic is a feasible option as it won't bring a hassle of making new topics for every question and it will also allow the helpers to not miss any of your questions and have one common topic for answering your Mathematics queries.

So start posting your problems.

can i hav maths notes