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  1. J

    the perfect titre......!!!!!

    Btw, you are referring to 33, right?
  2. J

    the perfect titre......!!!!!

    boy2011, NO ONE in our lab got a titre below 29.00 cm^3. I got it as 30.10 cm^3 :O
  3. J

    the perfect titre......!!!!!

    zahraahmed, the accurate titre value can not vary from lab to lab by just over 12%. The accurate titre must be 29.8 cm^3 +/- 0.02 cm^3.
  4. J

    Chemistry p33

    Anonymousx3, tell me one thing: Is there any mention of sodium thiosulphate and potassium iodide ?
  5. J

    Chem ppr 33 salt help?

    And we won't be provided with sodium thiosluphate or potassium iodide?
  6. J

    Chem ppr 33 salt help?

    Filza94, we have to titrate ammonium nitrate with KMn04 or sodium thiosulphate?
  7. J

    Mathematics 9709 paper 12 how was it with you?

    A(2,5) B(10,9) The correct co-ordinates of C were (3.6 and 1.8). I guess I made an error while solving the simultaneous equations and got 2.8 and 1.4. :(
  8. J

    Mathematics 9709 paper 12 how was it with you?

    Okay, I get you but let's try this. If you put x=2 then you get f(X)=1, hence the co-ordinates on the line being (1,2). This graph is NOT a graph of the line y=x and since inverse functions and the corresponding function are reflection of each others in the line y=x, then how can f inverse x...
  9. J

    Mathematics 9709 paper 12 how was it with you?

    Arlery, what expression did you obtain for f(X)?
  10. J

    Mathematics 9709 paper 12 how was it with you?

    That's what you guys have written that f inverse x is the same as x+3/2x+1, not me. :|
  11. J

    Mathematics 9709 paper 12 how was it with you?

    why are you making y the subject after putting f(X) equal to Y. We have to find F inverse x which would be found by making x the subject -/-
  12. J

    Mathematics 9709 paper 12 how was it with you?

    If you put f(x) equal to y, f inverse x isn't equal to the initial f(x) after making x the subject -.-
  13. J

    Mathematics 9709 paper 12 how was it with you?

    We were supposed to find the inverse of the function f(x), not of the composite function ff(x) which is indeed an identity function. :|
  14. J

    chemistry p 33

    is there any mention of sodium thiosulphate?
  15. J

    Mathematics 9709 paper 12 how was it with you?

    How is f inverse x equal to f(x). tell me :|
  16. J

    Mathematics 9709 paper 12 how was it with you?

    Please, someone answer my question.
  17. J

    Mathematics 9709 paper 12 how was it with you?

    Guys, how is f inverse x equal to f(x). f square x was the identity function, not f(x)? :|
  18. J

    Mathematics 9709 paper 12 how was it with you?

    How could F inverse x be equal to f(x)? :|
  19. J

    chemistry p 33

    Would we have to titrate ammonium nitrate with KMn04 or would we need to oxidize potassium iodide in the presence of ammonium nitrate and then titrate the resulting solution with sodium thiosulphate? :|
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