GUYS ANY TOUGH P1 QUESTIONS

[cashem'up]

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
 

[thecandydoll]

cie p1 txtbook/
PG 287
question 9 b 2.

[tmisterr]

(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.

[joel]

May June 2008 Question 8

[tmisterr]

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

[cashem'up]

aww.... man tmisterr..... i wanted to solve some.... its ok nice work

[tmisterr]

aww.... man tmisterr..... i wanted to solve some.... its ok nice work

really sorry ima_shah2002, you can take it from here!

[cashem'up]

haha no worries so wats ur avg score in p1

[nid404]

P1 is the only subject in which I've got 100%. Let's hope it happens tom

[mz]

can anybody please explain this -----  cie p1 book, page 284, question 10, part ii

[mz]

oh no problem i did it

[tmisterr]

haha no worries so wats ur avg score in p1

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?

[cashem'up]

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