Mathematics: Post your doubts here!

[Dark Destination]

Advanced Level Mathematics : Pure Mathematics 2 & 3 by Hugh Neill and Douglas Quadling
Advanced Level Mathematics : Pure Mathematics 1 by Hugh Neill and Douglas Quadling
A concise coure in Advanced Level Statistics (with worked examples) by J. Crawshaw and J.Chambers ( this book covers both S1 and S2 so check syllabus to know which contents to study for S1 )

btw isn't it too early to buy the books ?

Thanks! ^^

Lol, I know. I've been delaying buying the books for an entire year.

 

[Layla..]

What are the best books for A-Level mathematics for P1, P3, M1 and S1?

Need to buy a book now, a couple of months left in exams.

Since you had taken add-maths in O-levels, you don't even need to study for P1. As far as stats is concerned, the books have nothing good to offer. I suggest you do not buy books for anything. Dive straight into the past papers and the internet can help you with the course
When are you giving your Math exam?
I'm done with P1 and S1, got M1 and P3 this M/J

 

[Dark Destination]

Since you had taken add-maths in O-levels, you don't even need to study for P1. As far as stats is concerned, the books have nothing good to offer. I suggest you do not buy books for anything. Dive straight into the past papers and the internet can help you with the course
When are you giving your Math exam?
I'm done with P1 and S1, got M1 and P3 this M/J

Have to give all four P1, P3, M1, S1 in May-June 2016.

 

[bakhita]

If anybody needs e-books for A'Level, check here:
http://www.aliensservices.com/E-books.html

 

[Hassan Ali Abid]

Is there anyone who has studied or opted S2 in Alevels ???? or maybe anyone studying or may have studied Advanced/high level Stats ???

 

[bakhita]

Is there anyone who has studied or opted S2 in Alevels ???? or maybe anyone studying or may have studied Advanced/high level Stats ???

yah...I've opted for S2 but I haven't started S2 yet...I'm still covering S1

 

[Dashing Cancerian]

Can someone please solve the Q10 of W_14_33
It is the question of integration by substitution.
I integrated it but I am stuck at the limit and applying it.

 

[Layla..]

Have to give all four P1, P3, M1, S1 in May-June 2016.

You've got plenty of time. P1 is super easy. P3 is lengthy but you can do it. As far as M1 is concerned, you've studied physics so it'd be easy for you and S1, you should focus on permutations and combinations and probability. Rest all is pretty much formula-based and easy
You'd easily get an A*

 

[Dark Destination]

You've got plenty of time. P1 is super easy. P3 is lengthy but you can do it. As far as M1 is concerned, you've studied physics so it'd be easy for you and S1, you should focus on permutations and combinations and probability. Rest all is pretty much formula-based and easy
You'd easily get an A*

Yeah, I totally will.
Math is too easy.

 

[Hassan Ali Abid]

yah...I've opted for S2 but I haven't started S2 yet...I'm still covering S1

So do you know any book for S2 ??? or any solved book for its papers ???

 

[bakhita]

So do you know any book for S2 ??? or any solved book for its papers ???

I'm using this book :
http://www.amazon.com/Concise-Course-Advanced-Level-Statistics/dp/074875475X/ref=oosr
covers both S1 and S2
As for pastpapers, when I bought solved past papers, I had chosen S1 and M1 but later I changed my mind and found Statistics much more bearable than Mechanics, so I've solved papers for S1 but not for S2..But it doesn't matter, I'll print out unsolved ones and I can check them through mark schemes! What's your plan?

 

[robinhoodmustafa]

Can someone please solve the Q10 of W_14_33
It is the question of integration by substitution.
I integrated it but I am stuck at the limit and applying it.

could you please post the paper link

 

[nehaoscar]

How to solve this question please??? I'm completely lost

 

[Anum96]

View attachment 57660
How to solve this question please??? I'm completely lost

Give me five minutes. Ill help you out

 

[Anum96]

Give me five minutes. Ill help you out

View attachment 57660
How to solve this question please??? I'm completely lost

Dm /dt = K(√M) cos (0.02t)
dM / √m = kcos0.02t dt
ʃ dM / √m = ʃ kcos0.02t dt
(M ^(1/2)) / (1/2) = ksin0.02t/0.02 + c
Rearrange:
2√M =(ksin0.02t)/0.02 + C
Now we have t = 0 and M = 100 so just substitute inorder to find the constant C
Therefore,
2√100 = (ksin0.02(0))/0.02 + C
2(10) = 0 + C
C = 20
Now : substitute the value of C to find the relationship.
2√M = (ksin0.02t)/0.02 +20
**1/0.02 = 50
So, it will become: 2√M = 50ksin0.02t + 20
b) M = 196 and t = 50
Just plug in the values.
2√196 = 50ksin0.02(50) +20
14*2 = 50ksin0.02(50) + 20
28 = 50ksin0.02(50) + 20
28 – 20 = 50ksin0.02(50)
8 = 50ksin(1)
8/50 = ksin(1)
K = 0.19 Ans.
c) 2√M = 50ksin0.02t + 20
Make m the subject
You will get:
M = ((50ksin0.02t + 20)/2)^2
Plus in the values.
M =((50(0.19)sin0.02t + 20)/2)^2
Solve the square. And you will get around 27 or 28 as your answer
If you still have problem, Inbox me
I dont own a cellphone otherwise a picture wouldve cleared it out well. Sorry

 

[mimi fayaz]

please help me out with probability..it's really difficult to solve the complex ones..

 

[Anum96]

please help me out with probability..it's really difficult to solve the complex ones..

Inbox me all the questions you want done. Ill try my best to explain

 

[nehaoscar]

Dm /dt = K(√M) cos (0.02t)
dM / √m = kcos0.02t dt
ʃ dM / √m = ʃ kcos0.02t dt
(M ^(1/2)) / (1/2) = ksin0.02t/0.02 + c
Rearrange:
2√M =(ksin0.02t)/0.02 + C
Now we have t = 0 and M = 100 so just substitute inorder to find the constant C
Therefore,
2√100 = (ksin0.02(0))/0.02 + C
2(10) = 0 + C
C = 20
Now : substitute the value of C to find the relationship.
2√M = (ksin0.02t)/0.02 +20
**1/0.02 = 50
So, it will become: 2√M = 50ksin0.02t + 20
b) M = 196 and t = 50
Just plug in the values.
2√196 = 50ksin0.02(50) +20
14*2 = 50ksin0.02(50) + 20
28 = 50ksin0.02(50) + 20
28 – 20 = 50ksin0.02(50)
8 = 50ksin(1)
8/50 = ksin(1)
K = 0.19 Ans.
c) 2√M = 50ksin0.02t + 20
Make m the subject
You will get:
M = ((50ksin0.02t + 20)/2)^2
Plus in the values.
M =((50(0.19)sin0.02t + 20)/2)^2
Solve the square. And you will get around 27 or 28 as your answer
If you still have problem, Inbox me
I dont own a cellphone otherwise a picture wouldve cleared it out well. Sorry

Thankyou soooooooo much!!
This is great! Your workings and steps are clear!!
Thanks a ton for your effort and time!!!

 

[Anum96]

Thankyou soooooooo much!!
This is great! Your workings and steps are clear!!
Thanks a ton for your effort and time!!!

No problem !! Im glad I helped!
You can inbox me for more problems, Ill happily help ^_^
Stay blessed

 

[MafaldaC]