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  1. E

    Proof of normal to hyperbola

    parametric form I know the process to get to it but I just cant??I get to this: -xy1/a^2 + yx1/b^2= -yx/b^2 - xy/a^2 then dont know how to get to my target
  2. E

    Proof of normal to hyperbola

    Can someone write out the complete proof for me, i cant get to the 'standard' equation
  3. E

    Phys and chem NEAP papers

    Does anyone have them?
  4. E

    Fitzpatrick, conics, 32(c) Q 14

    If you have the fitz book can you have a look on my worked solutions the photocopy is broken at the bottom it goes from: Mpq= bsin(fi) - bsin@/acos(fi) - acos@ the next step is 2bcos((fi) + @)/2)sin(Fi-@/2)/something??? i dont know what the something is, and how they got that...
  5. E

    Neap papers

    anyone got a copy of them now?
  6. E

    Stopping voltage

    2002 HSC Q 25)c) seems to be testing something similar to this, right?
  7. E

    help me out , confused to the bs

    the rule uses the conventional current, thats the way it is
  8. E

    help with dotpoint about water monitoring

    noone has a good answer to it?
  9. E

    help with dotpoint about water monitoring

    hey jim thx for the reply its a students do dotpoint but its in our research task philip, that stuff is purifying water not testing for contaniments isnt it?
  10. E

    Water Assignment - Difference between Chemical and Physical?

    that aint a test for contamination though
  11. E

    help with dotpoint about water monitoring

    From CM&M 'Gather, process and present information on the features of the local town water supply in tems of: -Chemical tests available to determine levels and types of contaminants' From all the sites and summaries I've read, none seem to correctly address this dotpoint, they mention some...
  12. E

    staging king lear

    Has anyone got some suggestions of some considerations that need considering when staging king lear
  13. E

    Naturally occurring bases?

    look at the bases used as buffers in your blood
  14. E

    fahrenheit 451

    i have a short (1.5 page) essay on 3 themes in the novel, and diary entries for 3 key events, let me know if you want them ill attach them
  15. E

    if you were going to test emma/clueless

    and show a scene of clueless for inspiration what scene would you pick?? Can someone list the main scenes/their counterparts in emma so i have it right, like bullies/gypsies
  16. E

    Sketching Cubic equations

    test a point in your head?
  17. E

    I need inspiration!!

    earings, one kangaroo and one emu
  18. E

    No known formula ???

    if you put the roots in brackets (x-a)(x-b) and expand you will get a relationship
  19. E

    Innovation

    22/25 sounds good to me
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