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

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: cashem'up on May 11, 2010, 01:40:32 pm

Title: GUYS ANY TOUGH P1 QUESTIONS
Post by: cashem'up on May 11, 2010, 01:40:32 pm
hey guys got my P1 exam tomrow...... done all the papers... now feel useless doin nodin...... if any one has come across  ne tricky mind boggling question please tell me....lol....can be from txt book net....newhere( by da way use cie p1 book) Thanks
 ;D ;D ;D

Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: thecandydoll on May 11, 2010, 01:58:03 pm
cie p1 txtbook/
PG 287
question 9 b 2.
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: tmisterr on May 11, 2010, 02:14:03 pm
(i)dy/dx= 3x2-6x+12

(ii) completed the square form is 3(x-1)2+9 and this is the gradient function so it will be least when the bracketed part is equal to 0 (when x = 1) and when this is so, gradient is 9.
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: joel on May 11, 2010, 02:18:15 pm
May June 2008 Question 8
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: tmisterr on May 11, 2010, 02:53:05 pm
fg(x)=4(9/2-x)-2k

36/(2-x)-2k=x

36-2k(2-x)=2x-x2

x2-2x+2kx+36-4k

two equal roots so b2=4ac

(-2+2k)2=4*1*(36-4k)

4-8k+4k2=144-16k

4k2+8k-140=0

simplify(divide both sides by 4)

k2+2k-35=0

(k+7)(k-5)=0

k=-7 of k=5
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: cashem'up on May 11, 2010, 02:59:56 pm
aww.... man tmisterr..... i wanted to solve some.... its ok nice work :P
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: tmisterr on May 11, 2010, 03:09:02 pm
Quote from: ima_shah2002 on May 11, 2010, 02:59:56 pm
aww.... man tmisterr..... i wanted to solve some.... its ok nice work :P
:o really sorry ima_shah2002, you can take it from here!
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: cashem'up on May 11, 2010, 03:43:50 pm
haha no worries so wats ur avg score in p1 :D
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: nid404 on May 11, 2010, 03:46:36 pm
P1 is the only subject in which I've got 100%. Let's hope it happens tom
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: mz on May 11, 2010, 04:21:25 pm
can anybody please explain this -----  cie p1 book, page 284, question 10, part ii
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: mz on May 11, 2010, 04:29:23 pm
oh no problem i did it
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: tmisterr on May 11, 2010, 04:41:44 pm
Quote from: ima_shah2002 on May 11, 2010, 03:43:50 pm
haha no worries so wats ur avg score in p1 :D

I got 100% in my mocks, and in many of the papers i've been practicing, and like nid said, I hope it happens tomorrows. wbu?
Title: Re: GUYS ANY TOUGH P1 QUESTIONS
Post by: cashem'up on May 11, 2010, 07:00:09 pm
Quote from: tmisterr on May 11, 2010, 04:41:44 pm
I got 100% in my mocks, and in many of the papers i've been practicing, and like nid said, I hope it happens tomorrows. wbu?

same i got 75 in my mocks and thrice in practice at home....lolz :p and as both of u guys said lets see if it happens tomorow...... hope  i dont make slly mistakes ....... lolzz  ;D ;D ;D