Maths, Addmaths and Statistics: Post your doubts here!

[holoholo]

How do you find the midpoint of each ?

 

[fleurisabelle]

Need formula sheet for O'Level Mathematics D syllabus, anyone got it? I had it made once but seems like I've lost it

 

[fleurisabelle]

View attachment 57739
How do you find the midpoint of each ?

Mid-point is found by adding upper and lower boundaries and then dividing by 2. Over here, it goes like this:
(1+100)/2 = 50.5
(101+150)/2 =125.5 (we used 101 instead of 100 because the 100th term was included in the previous point)
(151+200)/2=175.5
(201+250)/2=225.5
(251+350)/2=300.5
(351+450)/2=400.5
(451+600)/2=525.5

 

[bogus]

for cumulative frequency you dont need the midpoint. You just plot the point on 100 if it is >100

 

[bogus]

Has anyone tried solving the Math D papers of 2015?

 

[fleurisabelle]

for cumulative frequency you dont need the midpoint. You just plot the point on 100 if it is >100

but over here we found the mid-point because we needed to find mean. Refer to the original question:
http://papers.gceguide.com/A Levels/Mathematics (9709)/9709_s11_qp_61.pdf Question 6

 

[bogus]

but over here we found the mid-point because we needed to find mean. Refer to the original question:
http://papers.gceguide.com/A Levels/Mathematics (9709)/9709_s11_qp_61.pdf Question 6

Oh. Ok, sorry then :')

 

[bogus]

Need formula sheet for O'Level Mathematics D syllabus, anyone got it? I had it made once but seems like I've lost it

I find these to be really useful as they help in a quick revision of the entire syllabus. Hope it helps you too

 

[fleurisabelle]

I find these to be really useful as they help in a quick revision of the entire syllabus. Hope it helps you too

Thank you!

 

[bogus]

Thank you!

Oh but the quadratic equation formula given is wrong. there is a 'b' instead of '6'

 

[fleurisabelle]

Oh but the quadratic equation formula given is wrong. there is a 'b' instead of '6'

Of course I'd know that ! no prob! thnx again

 

[staying alive]

Looking for the solution to the problems of chapter 11 of the New Syllabus Mathematics-3 book by Lee Peng Yee...if anyone could help me, would be greatly appreciated !

 

[staying alive]

Could someone help me with the last two problems here? its a bit urgent, would be greatly appreciated

 

[fahadhameed32]

Hello i want help in transformation . please and also statistics as well as circle properties .

 

[Parhaakoo]

How do I integrate this equation:-
2+(8/x-1)

 

[Rizwan Javed]

How do I integrate this equation:-
2+(8/x-1)

2 will be integrated to 2x

8/x-1 will be integrated to: 8 ln(x-1)

so after integration you'll get:

2x + 8ln(x-1) + c

 

[Parhaakoo]

2 will be integrated to 2x

8/x-1 will be integrated to: 8 ln(x-1)

so after integration you'll get:

2x + 8ln(x-1) + c

Is that in o level add math syllabus? :O

 

[Rizwan Javed]

Is that in o level add math syllabus? :O

I think it is. But do check the syllabus booklet for this, since i gave my exams 9 months ago, so don't remember exactly

 

[Parhaakoo]

I think it is. But do check the syllabus booklet for this, since i gave my exams 9 months ago, so don't remember exactly

Well if it was then, then it must be now too. Thanks!

 

[Dark Destination]

Is that in o level add math syllabus? :O

Nope. That's not a part of the Add-Math syllabus.