Maths D 22

[Saad Mughal]

https://www.xtremepapers.com/community/threads/mathematics.4806/

 

[Kamihus]

can anyone link the post where CaptainDanger posts a brilliant formula?

https://www.xtremepapers.com/community/threads/mathematics.4806/

 

[cross]

thanks! This is just AP GP. I thought it had some breakthrough information :\

 

[Saad Mughal]

Yeah, but it worked. That's what we were concerned with. Besides, what breakthrough information did you expect to get on problem solving?

 

[cross]

Well, you know, patterns and sequences in O levels don't have a definite formula. Usually it's left for the candidates to brainstorm. Back in my days, I used to think up formulas all the time, each was effective in its own way. Then, in AS, I studied AP/GP and realized, I could have just used these instead of thinking up all those "breakthrough" methods (which I can't prove at all, but they somehow got me the correct answer). And then, in A2, I came across even more systematic ways to counter sequences, relating to graphs, and now I realize that all the formulas I had were essentially modified versions of the AP/GP formula and I am curious to know if there are any "actual alternatives" to them.

 

[Saad Mughal]

it took 45mins to deduct formula but i completed my whole ppr in time

I saved those 45 minutes in the end by using the formula.

 

[Saad Mughal]

i though sitting idle was boring so i took 45 mins on 1 mark qstn

I just rechecked.

 

[Saad Mughal]

i did but till half of section b

Same.
And it cost me 2 marks.

 

[Aly Emran]

Same.
And it cost me 2 marks.

same here 3 marks goneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!! what will become of me. Yes my pprs r going to finish tommorw pm wish saray achay huay hoon

 

[Mohammad Farzanullah]

Which postulate of Congruence did you mention in Paper 1. SAS?

i mentioned SAS and this was because in the book, this congruency had been shown to prove that both triangles r congruent!
but i guess as Saad said, there were many possible answers here!

 

[Saad Mughal]

i mentioned SAS and this was because in the book, this congruency had been shown to prove that both triangles r congruent!
but i guess as Saad said, there were many possible answers here!

CIE isn't very strict on this matter. You needed to mention the correct reasons.
The reasons were,
AO = AO (Common side)
The two tangents were equal (Tangents from external point).
The Angle was 90 deg. (Tangent perp. Radius).
The radii were equal (Radii of circle).

 

[Mohammad Farzanullah]

CIE isn't very strict on this matter. You needed to mention the correct reasons.
The reasons were,
AO = AO (Common side)
The two tangents were equal (Tangents from external point).
The Angle was 90 deg. (Tangent perp. Radius).
The radii were equal (Radii of circle).

agreed!

 

[Mohammad Farzanullah]

you gloat about getting distinctions in every thread!

its all due to the ptessure applied by my relatives to score a WD!
whenever i go anywhere, ppl ask that how many WDs r u getting rather than asking for A*s!

 

[Lamaomgrofl]

I don't know what happened to me in the last question. I couldn't even solve a quadratic equation then

Overall, I think I'll lose 15 to 25 marks. It could have gone much better :/

 

[*Anonymous*]

I have one query from Paper 1....
Well, there was that question of Someone who works and gets paid by hour..
The time worked was 8 h 15 min...
So did we have to take the money for the 8 hours only or for the 15 mins tooo.....?

 

[Momin]

I have one query from Paper 1....
Well, there was that question of Someone who works and gets paid by hour..
The time worked was 8 h 15 min...
So did we have to take the money for the 8 hours only or for the 15 mins tooo.....?

i think for 8 hours and 15 min

 

[Mohammad Farzanullah]

I have one query from Paper 1....
Well, there was that question of Someone who works and gets paid by hour..
The time worked was 8 h 15 min...
So did we have to take the money for the 8 hours only or for the 15 mins tooo.....?

it should be 8 hours and 15 minutes!

 

[Saad Mughal]

actually wrote all of them

I wrote all of them then crossed one.

 

[Muqeet Tahir Malik]

I wrote AAS

 

[ritx]

another query from P1:
there was a question which compared the earnings/interest i don't exactly remember though, among two girls, named Cynthia and don't remember who. I guess the 'OTHER' girl had only $2 more in her account!?