Qualification > Math
[CIE] All Pure Mathematics (P1, P2 and P3) doubts here !
........:
--- Quote from: THEIGBOY on May 17, 2011, 08:45:35 pm ---can someone explain how to do questions like -->
question 5 paper 33 june 2010 part ii
and
question 3 paper 33 octover/nov 2010 part ii
and how to do question 10 on may june 2010 paper 33
Thank you very much
--- End quote ---
question 5 paper 33 june 2010 part ii
........:
--- Quote from: melony on May 18, 2011, 12:35:37 am ---awh no :-\! seems like everyone's offline, i just had two questions:
ON10 paper 31 question 7 (ii) i do not know how to get ?=-1/6 :(
June 2004 question 6 - i know it starts of like 1/3 ln (y^3+1)=x+c but i have no idea where the 1/3 comes from (should have listened in class :'()
--- End quote ---
as for the second part
listen when there is a equation like y^2/y^3+1 the only way to integrate this is when you differentiate the denominator the exact value should come in the numerator. In this case the differentiation of y^3+1 is 3y^2 but in the numerator it is y^2 so you take the 3 out by multiplying it by 1/3. so now it comes 1/3(y^2/y^3+1)and then you get 1/3ln(y^3+1)
melony:
wow thank you guys so much (leebux101 and ........)!! :D
i wish you well for the exam :)
TJ-56:
--- Quote from: SkyPilotage on May 17, 2011, 11:11:56 pm ---That is because if you substitute t=-2 and t=-1/3 in the position vector of P ; the dot product of AP.AB should be +ve since the angle is acute.. If its -ve the angle is obtuse...Therefore if you use t=-2 you will get it +ve, and t=-1/3 will be -ve meaning obstuse angle which is incorrect..
--- End quote ---
Oh ok thanx.. that cleared it up,
+rep
aloha32:
Hi guys
I really need help with complex numbers and argand diagrams!
Can u plz help me with these qs/
Nov 06 q9 part 4
Nov 09 q7 part4
JUNE 10 V1 Q7 Part 3
THANK U
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version