Qualification > Math
[CIE] All Pure Mathematics (P1, P2 and P3) doubts here !
elemis:
--- Quote from: SkyPilotage on May 08, 2011, 09:40:34 am ---Question 3:
Complete the square of f(x) to get (x-2)^2+3 to H(x-2)=(x-2)^2+3----> so H(x) = x^2+3.....
Question 4:
length of PQ is the (length of radius of the arc - height of triangle ) x 2
----> (5-5cos(0.6rad))x2
@ Ari: do you know how marks are distributed on sketches of graphs? (not drawings)
--- End quote ---
You get marks for the general shape, intersection points with coordinate axis and drawing in any asymptotes.
SkyPilotage:
--- Quote from: Ari Ben Canaan on May 08, 2011, 09:42:50 am ---You get marks for the general shape, intersection points with coordinate axis and drawing in any asymptotes.
--- End quote ---
ok so if its a curve like sinx, i can draw it free hand and just show where it intersects with the axis right?
-If they ask us to sketch a graph and its domain in x>0 , i should only draw the graph on the positive x-axis; should I show him the negative axis and leave it blank?
-when they ask us abt solving eqns do we need to show the quadratic formula or shall we just write the factors then the answer??
-which is better? to write the final answer as fractions or decimals? and if there is a square root of irration number do we leave it tht way or convert to decimals?
THankS :)
Tohru Kyo Sohma:
--- Quote from: SkyPilotage on May 08, 2011, 09:40:34 am ---Question 3:
Complete the square of f(x) to get (x-2)^2+3 to H(x-2)=(x-2)^2+3----> so H(x) = x^2+3.....
Question 4:
length of PQ is the (length of radius of the arc - height of triangle ) x 2
----> (5-5cos(0.6rad))x2
--- End quote ---
i understood the 4th qns.thanks ...but im still stuck at the 3rd qns i got till H(x-2)=(x-2)^2+3 myself too. but i cant get the final answer as H(x) = x^2+3
can you show me the steps?? :-[
plus do you understand may/june 2010 p11 qns 1??because im so lost in that qns :o
SkyPilotage:
--- Quote from: mimiswift on May 08, 2011, 09:56:27 am ---i understood the 4th qns.thanks ...but im still stuck at the 3rd qns i got till H(x-2)=(x-2)^2+3 myself too. but i cant get the final answer as H(x) = x^2+3
can you show me the steps?? :-[
plus do you understand may/june 2010 p11 qns 1??because im so lost in that qns :o
--- End quote ---
Actually you have to be able to see tht what gives u f(x) when u substitute x by x-2....
-June 2010...Yh it was answered before in this topic..Just go back some pages..
$H00t!N& $t@r:
question
Q10 (ii) and (iii) m/j 2009
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version