AS maths paper 13 Oct/nov 2010 discussion

[Fatema]

when are you going to discuss the maths paper 13 Oct/nov 2010

[Deadly_king]

when are you going to discuss the maths paper 13 Oct/nov 2010

I guess it's alright to discuss about it now. 24 hours have already elapsed!

But I sat for paper 12

I guess it won't be the same

[islu_jf]

hey.. i sat for 12 too..
can we discus that here??
and how did u do the last qestion?

[cs]

I sat for paper 13

[Deadly_king]

hey.. i sat for 12 too..
can we discus that here??
and how did u do the last qestion?

Last number, you must be meaning the volume of shaded region when it is rotated 360^o.

Well, it was simple.
1. You needed to find volume under the line.
2.Find volume under the curve.

Both should be in terms of pie. Then you subtract volume under curve from the volume under line to obtain the required solution

[lana]

hi...
i sat for 12 too !! how did you guys do ?? i really hated the last question (9 MARKS !!!) it was easy but i didn't have enough time so i got a wrong answer !! =[
best of luck in stat. !! =]

[Deadly_king]

hi...
i sat for 12 too !! how did you guys do ?? i really hated the last question (9 MARKS !!!) it was easy but i didn't have enough time so i got a wrong answer !! =[
best of luck in stat. !! =]

Yeah........all the work really was worth the 9 marks!

You need to catch up in the other papers 

I think we got Mechanics first

[lana]

i think i'll get the method mark because i did the two integrations of the curve and line but i think i messed up  the calculations !! anyway i hope i don't lose a lot of marks !! and i'm taking statistics not mechanics but best of luck with everything =] !!! and what other A levels are you taking ??

[Fatema]

I sat for paper 13

how was the paper?

[Deadly_king]

i think i'll get the method mark because i did the two integrations of the curve and line but i think i messed up  the calculations !! anyway i hope i don't lose a lot of marks !! and i'm taking statistics not mechanics but best of luck with everything =] !!! and what other A levels are you taking ??

Thanks.......good luck to you as well

I'll be doing Physics and Chemistry as well............what about you??

[aayushdhital123]

Hey m from the country nepal and i gave paper 12 too. :::Even i found it difficult so i did by using another methor ehich is......(y1)*2 -((y2))*2...and my answer without pie was 11.somethin...so could anyone give me the correct answer of that question..last number(volume of revolution)

[lana]

Thanks.......good luck to you as well

I'll be doing Physics and Chemistry as well............what about you??

physics AS, chemistry AS, Arabic A2 and Maths A2 and Biology A2... rough year =p !!
and By the way are finding physics to be soooo hard?? if you have revision notes, tips or anything that will help please send them to me if you can i'm really having hard time studying physics ... thank you =]

[lana]

Hey m from the country nepal and i gave paper 12 too. :::Even i found it difficult so i did by using another methor ehich is......(y1)*2 -((y2))*2...and my answer without pie was 11.somethin...so could anyone give me the correct answer of that question..last number(volume of revolution)

11/12 pi was the correct answer !! =[

[cs]

how was the paper?

It was hard for the most of the people in my school, i manage to do them after second round, but i missed out the "show" the real roots part in the last question before finding a and b, Do you remember your answer for the area in the last question..? and the circular measure part?

[Deadly_king]

physics AS, chemistry AS, Arabic A2 and Maths A2 and Biology A2... rough year =p !!
and By the way are finding physics to be soooo hard?? if you have revision notes, tips or anything that will help please send them to me if you can i'm really having hard time studying physics ... thank you =]

Yeah...........am having a bad time with physics as well

These links may be helpful to clear some of your doubts :
http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
http://www.astarmathsandphysics.com/
http://www.s-cool.co.uk/alevel.html

Hey m from the country nepal and i gave paper 12 too. Grin:::Even i found it difficult so i did by using another methor ehich is......(y1)*2 -((y2))*2...and my answer without pie was 11.somethin...so could anyone give me the correct answer of that question..last number(volume of revolution)

Yeah......the answer was 11/12 pie

Am afraid to tell you that but the answer would be 2.88 without pie.
Though your method (pie x integration of [y₁² - y₂²]) was correct.
Initially I did it the same way you did but got a negative value as answer. So I decided to do it step by step and I finally obtained the correct answer.(according to me and my friends)