maths pro msn

• Y_Shun

  18 Sep 07, 17:11

  Hello...
  Can some maths pro please share your msn here if you don't mind...o.O or PM it to me...keke
  
  I have a few questions to ask...(or get hints from you to do it)
  
  In my opinion, I feel that posting here quite troublesome sometimes...have to upload etc.
• Y_Shun

  18 Sep 07, 17:16

  Oh yeah...to save time, I think I still upload first.
  
  DOC: http://www.twango.com/media/yongshun.public/yongshun.10001
  PDF: http://www.twango.com/media/yongshun.public/yongshun.10002
  
  My school prelim AMATH questions, these are the questions I am wrong in, so want to ask here how to solve it.
• sLeEpWaLkErInG

  18 Sep 07, 17:17

  eh.. simi lvl one.. wait u ask someone pm u then he only sec, u ask JC question.. then =
• Y_Shun

  18 Sep 07, 17:17

  Originally posted by sLeEpWaLkErInG:

  eh.. simi lvl one.. wait u ask someone pm u then he only sec, u ask JC question.. then =

  O Level
• sLeEpWaLkErInG

  18 Sep 07, 17:19

  pai seh.. A maths now forget liao.. too long never do liao though O'lvl i got A1..
• Darkness_hacker99

  18 Sep 07, 17:46

  I studying E maths only. Sorry.
  
• eagle

  18 Sep 07, 20:04

  Sry me not free this week... Only got time on fri onwards... If you can wait I will take a look on friday
• popikachu

  18 Sep 07, 20:56

  hmm i am only sec 4 NA a math and who isnt really good in it.
  
  But i am a sec 4 E e maths student who is very good in it....
  
  a math and e math alot of different...
  
  haiz i try see i know how to do or not... i have not learn all topic yet.
• eagle

  18 Sep 07, 21:07

  Just a tip for the trigo identity in Prelim 2
  
  Do from RHS. Also, convert all trigo identities to just sin and cos for easier manipulation
• popikachu

  18 Sep 07, 21:14

  sorry i really dunno how to do...
  
  not even a single one...
  
  haiz...
• CoolMyth

  18 Sep 07, 21:32

  
  
  Only got time for this lah.
  
  Long time no type maths, very rusty already.
• CoolMyth

  18 Sep 07, 21:38

  Sorry, forgot to add a bracket between the "75 + 1".
• ^tamago^

  19 Sep 07, 17:50

  1.
  
  
  
  
  
  
• ^tamago^

  19 Sep 07, 17:56

  2.
  
  
  
  
  3.
  
  
• ^tamago^

  19 Sep 07, 18:10

  4.
  (1-cos²x)(3-2sin²x)=1
  sin²x(3-2sin²x)=1
  2(sin²x)²-3sin²x+1=0
  (2sin²x-1)(sin²x-1)=0
  sin²x = 1 or ½
  sin x = ±1, ±sqrt(½)
  For 0
  1.
  RHS
  = 1/(sec x-tan x)
  = (sec²x-tan²x)/(sec x-tan x) sec²x-tan²x=1
  = sec x+tan x a²-b²=(a+b)(a-b)
  = LHS
  
  
• HyuugaNeji

  19 Sep 07, 18:35

  Originally posted by ^tamago^:
  [b]2.
  
  
  
  

  this part should be 8/3, not 6. Otherwise, good job.
• ^tamago^

  19 Sep 07, 18:45

  Originally posted by HyuugaNeji:

  this part should be 8/3, not 6. Otherwise, good job.

  eh paiseh
• HyuugaNeji

  19 Sep 07, 19:39

  is this sec 4 exam paper? A or E Maths?
• eagle

  19 Sep 07, 19:45

  Originally posted by HyuugaNeji:

  is this sec 4 exam paper? A or E Maths?

  Originally posted by Y_Shun:

  My school prelim AMATH questions

• Y_Shun

  20 Sep 07, 22:21

  Originally posted by ^tamago^:
  2.
  
  
  

  first of all, TY to those who helped me to solve the qtns! ^.^
  
  next right, i want to ask this qwtn..where did u get the 8/3 thingy?
• ^tamago^

  20 Sep 07, 22:32

  Originally posted by Y_Shun:

  first of all, TY to those who helped me to solve the qtns! ^.^
  
  next right, i want to ask this qwtn..where did u get the 8/3 thingy?

  3/2 × 8/3 = 4
  
  u noe u can move a constant out of the integrand right?
• caleb_chiang

  20 Sep 07, 22:35

  me give back most to the teacher liao...
• lpx88

  20 Sep 07, 22:38

  Originally posted by Y_Shun:

  first of all, TY to those who helped me to solve the qtns! ^.^
  
  next right, i want to ask this qwtn..where did u get the 8/3 thingy?

  
  
  Typo:
  *This Thus*
  
  presentation abit screwed but hope u noe wad i mean
• Y_Shun

  20 Sep 07, 22:40

  Originally posted by ^tamago^:
  
  3/2 × [b]8/3 = 4
  
  u noe u can move a constant out of the integrand right?[/b]

  orh...know liao....
  darn its so easy yet i tot too much