IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Math => Topic started by: Q80BOY on May 07, 2009, 02:49:40 pm

Title: Math P2 May/Jun 1999 HELP !!!
Post by: Q80BOY on May 07, 2009, 02:49:40 pm
IGCSE (CIE) Mathematics Paper 2 May/June 1999

(i attached the paper)

Page 5, Question 11 (Done)

Page 6, Question 14, Part (a), Section (ii) (Done)

Page 8, Question 18, Part (b), Section (i) (Done)

Special thanks to Zara for helping me with the questions

Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 03:15:28 pm
page 5, q 11......so draw a tangent to the point where x=2..n then take ny two points on it and then with the help of its co-ordinates calculate the gradient....gradient=(y2-y1)/(x2-x1)


page 6, q14.....1st calculate f(-5)=2(-5)+1=-9
            then,,,g(-9)=(-92)+3=84
                            note: its -9*-9=81

ill post the answer to ur last ques in a few mins.... :)
                                             
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 03:33:12 pm
answer to ur last ques (i)>>>1st vll calculate the value of k

>>>T=kH
>>>-5=k500
>>>k=-0.01

then,,
>>>T=-0.01H
>>>-18=-0.01H
>>>H=1800m

therefore,,,height of the top of the mountain above sea level =1800+2500=4300m

note: v added 2500 bcz the ques was height above sea level nt above base camp

plz chk the answer with the mark scheme,,,,n if its rong plz lemme kno...
Thanks.. :)
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: Q80BOY on May 07, 2009, 03:43:07 pm
Quote from: zara on May 07, 2009, 03:33:12 pm
answer to ur last ques (i)>>>1st vll calculate the value of k

>>>T=kH
>>>-5=k500
>>>k=-0.01

then,,
>>>T=-0.01H
>>>-18=-0.01H
>>>H=1800m

therefore,,,height of the top of the mountain above sea level =1800+2500=4300m

note: v added 2500 bcz the ques was height above sea level nt above base camp

plz chk the answer with the mark scheme,,,,n if its rong plz lemme kno...
Thanks.. :)


Thanks for the help on the first two questions + rep (do u mind drawing the tangent on the image above, i dunno how to drow it) :-[

and ur answer to Q18 is wrong, the m/s says its 4300  ??? wht did they get it from ?? and k = -0.01
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 03:45:57 pm
even i got the answer as 4300m....plz chk again above...
n how they got -0.01 is also specified in m working above...
just read m post once mor n ull get it... ;)
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: Q80BOY on May 07, 2009, 03:54:48 pm
Quote from: zara on May 07, 2009, 03:45:57 pm
even i got the answer as 4300m....plz chk again above...
n how they got -0.01 is also specified in m working above...
just read m post once mor n ull get it... ;)

sorry, im a doofus, i didnt read all ur answer  :-[

Thanks a lot ;D do u mind drawaing the tangent for the first question  :-\
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 04:00:18 pm
okay....i attached u the file with the tangent drawn...but its nt too accurate...but yeah sure itll give u an idea as to how it has to be done.......on this line u take any two point n with the help of its co-ordinates u calculate the gradient with the formula specified in m earlier post.....

hope this helps... :)
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 04:03:28 pm
okay so if uv got how to do q 18 part b(ii)  plz help me.....i dunno hw to do it.. ???
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: yinyang on May 07, 2009, 04:26:34 pm
Q18 b ii> T=kh
           
                (the height is negative because the base camp is considered 0 so anything below it is negative)


  x=-0.01*-2500
 x=25
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 04:32:40 pm
r u sure.....plz chk it with the ms n temme...
m confused bcz in ques they say dat base camp is 2500m above sea level so hw cn it b in -ve ???
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: astarmathsandphysics on May 07, 2009, 05:05:52 pm
For the height above sea level the equation is T=-01(h-2500), h is the height above sea level. For T=-18 we have
h=-18/-0.01+2500=4300m

At sea level h=0 so T=-01(0-2500)=25
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 05:12:44 pm
i got the answer for (i) b4 .....i askd for part b(ii)....plz help...
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 05:32:54 pm
plzzzz can ne1 help?? :-\
 
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: astarmathsandphysics on May 07, 2009, 05:34:08 pm
I will do it now.
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: astarmathsandphysics on May 07, 2009, 05:38:05 pm
I added to my earlier post.
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: zara on May 07, 2009, 05:41:44 pm
Thanks astarmathsandphysics... ;D
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: hyebyekadal on May 07, 2009, 07:53:52 pm
qboy can send me the ms >??? thanx man increased AGAIN!
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: june on May 08, 2009, 10:47:40 pm
DOES ANYONE HAVE THE MARK SCHEME FOR THE 1999 NOV P2 PP ?? PLEASEE???
Title: Re: Math P2 May/Jun 1999 HELP !!!
Post by: astarmathsandphysics on May 08, 2009, 11:01:27 pm
I have them. They are on the torrent site but what is your email?