Qualification > Math
[CIE] All Pure Mathematics (P1, P2 and P3) doubts here !
........:
--- Quote from: aloha32 on May 18, 2011, 08:42:46 am ---Hi guys
I really need help with complex numbers and argand diagrams!
Can u plz help me with these qs/
JUNE 10 V1 Q7 Part 3
THANK U
--- End quote ---
This one
I am getting confused bro..
There were 3 questions that were being asked
SkyPilotage:
--- Quote from: Dumb economist on May 18, 2011, 06:18:31 pm ---and to find the range
just put the values -7 and 1 on a number line
take out any value less than 1 like 0 and put it into (x-1)(x+7)
take out another value between -7 and 1 and put it into ^
and finally a value less than -7 and put it into (x-1)(x+7)
and see if they are less than 0
--- End quote ---
Would be easier for you if you say that outside the range, the sign is the same sign as a(coefficient of x^2) so if its <0 then its -7<x<1 ...
But your way is perfectly correct too...
SkyPilotage:
--- Quote from: Dumb economist on May 18, 2011, 06:26:11 pm ---This one
I am getting confused bro..
There were 3 questions that were being asked
--- End quote ---
OH oH my bad!! I thought you were on Nov 2006 9 iii) it has also u and z-u=1 srry :D
leebux101:
oh never mind! i thought u were talking about ON 2003 question..
guys please i need this one ON 2010 P32 Q1
leebux101:
confusion between 3 papers! lol haha! =D
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