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Homework Forum help sec3 maths

gobez14

1,364 posts since Apr '07
- 21 May `08, 8:12PM
  
  can help mi find the roots of
  
  Qn1. 6 - (x^2/10) - (4/x) = 0
  
  Qn2. x^2 + 5x -70 + (40/x) = 0
  
  note. they are non integers.
  
  and
  
  the coordinates of a point are (4 , 2.4) and the equation of the curve is y=5 - (x^2/10) - (4/x)
  
  find the gradient of the point.(using differentiation)
Homework Forum A-maths help urgent fer holi hw

gobez14

1,364 posts since Apr '07
- 16 Mar `08, 2:01PM
  
  and can show mi the steps fer qn1 too? i understand alr but i dunno how to present teh proof
Homework Forum A-maths help urgent fer holi hw

gobez14

1,364 posts since Apr '07
- 16 Mar `08, 1:56PM
  
  can gimme final answer fer qn 2 and 3 ma i want check cuz my answer different from answer key i dunno is answer key wrong or i wrng
Homework Forum A-maths help urgent fer holi hw

gobez14

1,364 posts since Apr '07
- 16 Mar `08, 1:47PM
  
  pls help
  
  1.show that x^2+hx+k=o has two distinct roots fer al;l negative valuse of k
  
  2. find the values of k for which the x axis is a tangent to the curve y=3x^2-8x+5-k.For each value of k,find the coordiantes ffor the point of tangency.
  
  3.Find the range of values of k for whch the equation x^2 +5x+3=k has two real and distinct roots
  
  qn 3. i noe how to do but answer differnt from answer key so nid clarification
  
  thks in advacne
Homework Forum help solve this qn thankew

gobez14

1,364 posts since Apr '07
- 04 Mar `08, 3:20PM
  
  given that y=2x^2 + px +16 and that y < 0 only when 2 < x < k, find the value of p and of k
Food Anyone likes Nougats?

gobez14

1,364 posts since Apr '07
- 28 Feb `08, 12:01AM
  
  i liek crunchy 1
Homework Forum (3x)to the power of lg3 is equal to (4x)to the power of lg4

gobez14

1,364 posts since Apr '07
- 28 Jan `08, 9:00PM
  
  tahnkew so much tammy
Homework Forum (3x)to the power of lg3 is equal to (4x)to the power of lg4

gobez14

1,364 posts since Apr '07
- 28 Jan `08, 7:46PM
  
  how to get!!!????
Homework Forum (3x)to the power of lg3 is equal to (4x)to the power of lg4

gobez14

1,364 posts since Apr '07
- 28 Jan `08, 7:40PM
  
  Solve fer x ..
  
  i noe the answer it is 1/12 but how to get!?
  
  pls help
::sgForums Music Station:: wad jpop or jrock r ya lsitening to

gobez14

1,364 posts since Apr '07
- 21 Jan `08, 7:41PM
  
  share ur all time favourites?
Homework Forum x^1/pi = 0 solve for x

gobez14

1,364 posts since Apr '07
- 20 Jan `08, 3:01PM
  
  Originally posted by gobez14:
  
  hmm but hor i sub 0 into x den 0^1/pi = math error on the calcualtor
  
  PAiseh paiseh the question supposed to be x^-1/pi = 0
Homework Forum x^1/pi = 0 solve for x

gobez14

1,364 posts since Apr '07
- 20 Jan `08, 2:58PM
  
  Originally posted by jay_rocks:
  
  not 0 meh?
  
  hmm but hor i sub 0 into x den 0^1/pi = math error on the calcualtor
  
  Edited by gobez14 20 Jan `08, 3:00PM
Homework Forum x^1/pi = 0 solve for x

gobez14

1,364 posts since Apr '07
- 20 Jan `08, 2:41PM
  
  can any1 help with this qn?
Homework Forum A maths sec 3

gobez14

1,364 posts since Apr '07
- 20 Jan `08, 9:28AM
  
  Originally posted by wishboy:
  
  4x^½ = 3 - 7x
  
  Let x^½ be u
  
  4u = 3 - 7u²
  7u² + 4u - 3 = 0
  (7u - 3)(u + 1) = 0
  7u - 3 = 0 or u + 1 = 0
  u = 3/7 or u = -1
  x^½ = 3/7 or x^½ = -1
  x = 9/49 or 1
  
  FYI, x^½ is equals to "square root of x", written as "sqrt x"
  
  but hor y i sub 1 into the original equation 1 side is 4 the other side is -4 ?
  liddat still can??
Homework Forum A maths sec 3

gobez14

1,364 posts since Apr '07
- 19 Jan `08, 3:45PM
  
  Originally posted by SBS261P:
  
  gt careless mistake... shld be
  
  z = 3/7
  
  x = (3/7)^2 = 9/49
  
  can elaborate?
Homework Forum A maths sec 3

gobez14

1,364 posts since Apr '07
- 19 Jan `08, 3:23PM
  
  Originally posted by ^tamago^:
  
  3 log(a,2) - 4 + log(a,a³)
  = log(a,8) - log(a,a^4) + log(a,a³)
  = log[a,(8/a)]
  
  4*sqrt(x)=3-7x
  Let z be sqrt(x), z>=0
  7z²+4z-3=0
  (7z-3)(z+1)=0
  z = 3/7 or -1 (rej. as z>=0)
  x = sqrt(3/7)
  
  how come liddat ar? 7z²+4z-3=0
Homework Forum A maths sec 3

gobez14

1,364 posts since Apr '07
- 19 Jan `08, 2:44PM
  
  hi
  
  can any1 tell mi wads teh answer of 3 log a (2) - 4 + log a (a to the power of 3) whe nconverted into a single logarithmic form
  
  and value of x when 4 (x to the power of half) = 3-7x
Homework Forum help with sec 3 physics

gobez14

1,364 posts since Apr '07
- 16 Jan `08, 3:15PM
  
  erm psl help
  
  state teh effect if any on the period of the pendulum when
  
  a)a heavier pendulum bob of the same size is used
  
  b)there are a larger number of oscillations
  
  c) there is a smaller angle of swing
  
  d)a longer pendulum is used
  
  assuming all otehr factors are constant
  
  TIA
PSP Forum Dynasty Warrior vol 2

gobez14

1,364 posts since Apr '07
- 06 Jan `08, 6:26PM
  
  Originally posted by coldzero:
  
  Huh? What do you mean?
  
  fiye lu bu wif the horse
  
  slash 1 tiem and run away continue doing wjen u have teh chance
  
  at least tts how i tried
Club Otaku H20 - Footprints in the Sand

gobez14

1,364 posts since Apr '07
- 04 Jan `08, 8:08PM
  
  "H2O rocks your soul" lol
Club Otaku Anime blogs

gobez14

1,364 posts since Apr '07
- 01 Jan `08, 4:03PM
  
  Originally posted by Gordonator:
  
  signature.
  
  lollol in the profile haha y i nvr tot of sia lol
Club Otaku Anime blogs

gobez14

1,364 posts since Apr '07
- 01 Jan `08, 2:06PM
  
  Originally posted by Gordonator:
  
  it's inside this thread. look carefully.
  
  ]
  
  hint hint??
Club Otaku Anime blogs

gobez14

1,364 posts since Apr '07
- 01 Jan `08, 12:54AM
  
  Originally posted by Gordonator:
  
  i recommend abao's blog as well.
  
  wads abao's blog?
Club Otaku Anime blogs

gobez14

1,364 posts since Apr '07
- 28 Dec `07, 3:39PM
  
  Originally posted by abao:
  
  ok, if you can guess which anime am I thinking of with the word "holy grail" i will put 5 links which I frequent
  
  Fate Stay Night
Club Otaku Anime blogs

gobez14

1,364 posts since Apr '07
- 28 Dec `07, 2:37PM
  
  Originally posted by abao:
  
  explain why i should reveal the holy grail to you
  
  for the love of all humanity?
  
  caring is sharing