Monday, January 10, 2011

Rules of Transposition

Do you know that we have simple rules to transpose minus (-ve negative) cylinder form to plus (+ve positive) cylinder form and vice versa? Just follow these rules below, InsyaAllah, you will always obtain a correct answer.
Rules of transposition
1.Add the sph and cyl, taking into account their sign
2.Change their sign of the cyl
3.Alter the axis by 90°
  a. if the original axis is 90° or less, add 90° to it
  b. if the original axis is over 90°, subtract 90° from it
  
Now, you've understand the rules right? Let's try these questions below;
  1. +4.00/-2.00 x 180 
  2. -400/-2.00 x 175 
  3. +5.00/+3.00 @ 120 
  4. -11.00/-11.00 @ 65 
  5. -0.75/-0.25 x 42 
  6. +4.25/-1.25 x20 
  7. -6.75/-2.75 x 80 
  8. -22.00/-1.25 x174 
  9. -12.00/+5.00 x 155
  10. +7.50/-2.00 x 25
  11. -4.00/-2.00 x 180 
  12. +400/-2.00 x 175 
  13. +5.00/-3.00 @ 120 
  14. pl/-11.00 @ 65 
  15. -1.75/-0.25 x 42 
  16. +5.25/-1.25 x20 
  17. -6.25/-2.75 x 80 
  18. -22.00/-11.25 x174 
  19. -12.00/-5.00 x 55
  20. +7.50/-2.00 x 125
  21. -11.00/+5.00 x 35
  22. +6.00/-2.50 x 105
  23. +5.00/-2.00 x 180 
  24. -4.00/-3.00 x 175 
  25. +5.00/-3.00 @ 120 
  26. -11.00/-1.25 @ 65 
  27. +0.75/-0.25 x 42 
  28. -5.25/-1.25 x20 
  29. -6.75/-2.75 x 180 
  30. -22.00/-1.25 x72
  31. -12.00/+5.00 x 5
  32. +7.50/-4.00 x10
  33. -4.00/-1.00 x 80 
  34. +400/-2.00 @ 90
  35. +5.00/-2.00 @ 120 
  36. pl/-1.00 @ 165 
  37. -1.75/-0.25 @ 42 
  38. +5.25/-1.00 x120 
  39. -6.25/-2.75 x@80 
  40. -20.00/-1.00 x174 
  41. -11.00/-4.00 x 55
  42. +7.75/-3.00 x 125
  43. -1.00/+5.00 x 35
  44. +6.00/+2.50 x 115
  45. -2.00/-7.00 @ 100
Please grab one question for each of you.. (Year 1 & Year 2) first come first serve basis, Year 3 & Year 4 are also encouraged to answer these questions.

46 comments:

  1. raja nor shahila raja mohamadJanuary 10, 2011 at 4:17 PM

    adding +4 and -2 will give us +2.00, sign of cyl will become + ,and subtract 90' from 180'..therefore,the answer is
    +2.00/+2.00 X 90

    ReplyDelete
  2. question num 2..

    minus cyl form;
    -4.00DS/ -2.00DC X 175

    Transpose to plus cyl form;
    -6.00DS/ +2.00DC X 85

    ReplyDelete
  3. raja nor shahila raja mohamadJanuary 10, 2011 at 4:32 PM

    @raja nor shahila raja mohamad
    huu~
    mine is question no 1..
    minus cyl form : +4.00/-2.00 X 180
    so we transposed to +2.00 / + 2.00 X 90
    :P

    ReplyDelete
  4. nursyahirah ibrahimJanuary 10, 2011 at 4:32 PM

    answer for question no 3

    +8.00DS/-3.00DC X 120

    ReplyDelete
  5. no 4:

    minus cyl form:
    -11.00/-11.00 @ 65

    transpose to plus cyl form:
    -22.00 DS / + 11.00 DC x 65

    ReplyDelete
  6. No 5:

    minus cyl form:
    -0.75DS/-0.25DC x 42

    plus cyl form:
    -1.00DS/+0.25DC x 132

    ReplyDelete
  7. Q no 6

    minus cyl form :
    +4.25DS/ - 1.25DC x 20

    tranpose to plus cyl form :

    +3.00DS/ +1.25DC x 110

    ReplyDelete
  8. Nurul Ain Md JudenJanuary 10, 2011 at 6:37 PM

    No7:.

    minus cyl form:
    -6.75/-2.75 x 80

    transpose to plus cyl form:
    -9.50/+2.75 x 170

    ReplyDelete
  9. SITI NUR LIYANA MUSTAFARJanuary 10, 2011 at 6:54 PM

    Q9:
    plus cyl form :
    -12.00DS/+5.00DC x 155

    transpose: minus cyl form:
    -7.00DS/-5.00DC x 65

    ReplyDelete
  10. NUR HANI ASMIRA MOHD AMLIJanuary 10, 2011 at 7:02 PM

    no 29:

    minus cyl form
    -6.75DS/-2.75DC X 180

    plus cyl form
    -9.50DS/+2.75DC X 90

    ReplyDelete
  11. Question 19:

    answer: -17.00/+5.00x145

    ReplyDelete
  12. Wan Nur Amalina Wan A. LAtifJanuary 10, 2011 at 8:08 PM

    question 20:

    answer:+5.50DS/+2.00DC x 35

    ReplyDelete
  13. Awatif Akmal ArshadJanuary 10, 2011 at 8:10 PM

    question 21:
    -11.00/+5.00 x 35

    -11+5= -6

    answer: -6.00/-5.00 x 125

    ReplyDelete
  14. norsyazwani mohamad daudJanuary 10, 2011 at 8:13 PM

    Q 15:
    minus cyl form;
    -1.75DS/-0.25DC x 42
    transpose to plus cyl:
    -2.00DS/+0.25DC x 132

    ReplyDelete
  15. salam..
    answer for question no.16

    minus cyl form :
    +5.25DS/-1.25DC X 20

    so,we transpose to plus cyl form:

    +4.00DS/+1.25DC X 110

    ReplyDelete
  16. norain binti razaliJanuary 10, 2011 at 9:24 PM

    quesition 27:

    minus cyl form:
    +0.75/-0.25x42

    transpose to plus cyl form:
    +0.50/+0.25x132

    ReplyDelete
  17. Assalamualaikum...

    I would like to answer qs no. 44

    +6.00/+2.50 x 115

    minus cyl form:
    +8.50/-2.50 x 25

    ReplyDelete
  18. Assalamualaikum...

    I love to transpose qs no.42 into plus-cyl form,

    minus-cyl form: +7.75/-3.00 x 125

    plus-cyl form: +4.75/+3.00 x 35

    ReplyDelete
  19. Nur Farrahin Bt Mohd Nor KamalJanuary 10, 2011 at 9:40 PM

    salam..

    Q28
    minus cyl form :
    -5.25/-1.25 x 20

    transpose to plus cyl form :
    -6.5/+1.25 x 110

    ReplyDelete
  20. Assalamualikum...
    I want to try to answer question no 17...
    minus cyl form
    -6.25DS/ -2.75DC x 80

    transpose into plus cyl form
    = -9.00DS/ + 2.75 DC X 170

    ReplyDelete
  21. salam...
    ans for question 43:

    plus cyl form:
    -1.00/+5.00x35

    minus cyl form:
    +4.00/-5.00x125

    ReplyDelete
  22. QUESTION 43.

    -1.00DS/+5.00DCx35

    ANSWER: +4.00DS/-5.00DCx125 (transpose into minus cyl form)

    ReplyDelete
  23. x prasan same ngan org len..

    Q:38

    +5.25DS/-1.00DCX120

    A: +4.25DS/+1.00DCX30
    (TRANSPOSE INTO PLUS FORM)

    ReplyDelete
  24. no 13

    ans: +2.00/+3.00 X 120

    ReplyDelete
  25. nuur hani khairuddinJanuary 10, 2011 at 10:41 PM

    question 23

    ans: +3.00/+2.00 X 90

    ReplyDelete
  26. Siti Hawa Saadah HamdanJanuary 10, 2011 at 10:52 PM

    QUESTION 10

    +7.50/-2.00 x 25

    ans:+5.50/+2.00 x 115

    ReplyDelete
  27. Muhammad Jazli Che Mohd AriffJanuary 10, 2011 at 11:00 PM

    QUESTION 24

    -4.00/-3.00 X 175
    ANS:
    -7.00/+3.00 X 85

    ReplyDelete
  28. salam...
    firstly sorry sir 4 answering a bit late..
    this due to the slow internet at MAHALLAH... so it would take a long time to load...

    i would like to ans the last question...
    Q45

    =-2.00DS/-7.00DC@100
    =-2.00DS/-7.00x10
    plus cyl
    = -9.00DS/+7.00DCx100
    TQ.

    ReplyDelete
  29. Question #39

    -6.25DS/-2.75DC@80

    answer;

    minus cyl form: -6.25DS/-2.75DCX170

    plus cyl form: -9.00DS/+2.75DCx80

    :))

    ReplyDelete
  30. Question #37

    -1.75DS/-0.25DC@42

    minus cyl form: -1.75DS/-0.25DCX132

    plus cyl form: -2.00DS/+0.25DCX42

    ReplyDelete
  31. nurjannah ngatimanJanuary 11, 2011 at 1:07 PM

    bismillahirahmanirrahim...
    question no. 8:


    -22.00/-1.25 x174

    1st step: -22.00+(-1.25)= -23.25
    2nd step: -1.25 will become +1.25
    3rd step: 174-90= 84

    so, the answer is -23.25/+1.25 x 84

    ReplyDelete
  32. suyidatina bt sulaimanJanuary 11, 2011 at 6:24 PM

    salam..
    i would like to answer question 24.
    -4/-3 x 175

    ans..
    1)-4+(-3)=-7
    2)-3 change to +3
    3)175-90= 85

    finally...-7/+3 x 85

    ReplyDelete
  33. muhammad hazwan razakJanuary 11, 2011 at 8:32 PM

    question 11

    -4.00/-2.00x180

    answer= -6.00/+2.00x90

    ReplyDelete
  34. Nasrul Hadi Mohd SanadiJanuary 11, 2011 at 10:22 PM

    question 33

    minus cyl form
    -4.00/-1.00 X 80

    transpose to plus cyl form
    -5.00/+1.00 X 170

    ReplyDelete
  35. question 44

    plus cyl form
    +6.00/+2.50 x 115

    minus cyl form
    +8.50/-2.50 x 25

    ReplyDelete
  36. Correction

    question 44

    plus cyl form
    +6.00 DS/+2.50 DC x 115

    minus cyl form
    +8.50 DS/-2.50 DC x 25

    ReplyDelete
  37. salam..i hope dat dis question is not overlapped with others...

    Q32
    (-ve cyl)= +7.50DS/-4.00DC X 10
    trnspose to(+cyl)= +3.50DS/+4.00 X 100

    ReplyDelete
  38. QUESTION 12

    MINUS CYL-FORM : +4.00DS/-2.00DC X 175

    transpose to

    PLUS CYL-FORM : +2.00DS/+2.00DC X 85

    ReplyDelete
  39. Q40
    the answer:
    -21.00/+1.00x84

    ReplyDelete
  40. Q22 :
    minus cyl form :
    +6.00DS/-2.50DC x 105

    transpose to plus cyl form:
    +3.50DS/+2.50DC x 15

    ReplyDelete
  41. Q31

    -12.00/+5.00x5

    ans(-ve cyl):-7.00/-5.00x95

    ReplyDelete
  42. Q41:

    -11.00/-4.00x55

    ans(+ve cyl):-7.00/+4.00x145

    ReplyDelete
  43. Q41:

    -11.00/-4.00x55

    ans(+ve cyl):-7.00/+4.00x145

    ReplyDelete
  44. Mohd Syukri AminuddinJanuary 17, 2011 at 2:53 AM

    Salam..
    Question no.25..
    +5.00/-3.00 @ 120

    Steps to transpose :
    1.change to sph/cyl cross-form,
    +5.00/-3.00 @ 120 -> +5.00/-3.00 x 30
    2.add power of sph and cyl,
    (+5.00) + (-3.00) = +2.00
    3.change sign of the cyl,
    -3.00 -> +3.00
    4.alter axis (add 90 degree),
    30 + (90) = 120

    Finally the answer,
    = +2.00/+3.00 x 120

    TQ..=)

    ReplyDelete
  45. Mohd Syukri AminuddinJanuary 17, 2011 at 3:54 AM

    Salam...
    Question no.25
    +5.00/-3.00 @ 120

    Steps to transpose :
    1) change to sph/cyl cross-form,
    +5.00/-3.00 @ 120 -> +5.00/-3.00 x 30
    2)add power of sph and cyl,
    (+5.00) + (-3.00) = +2.00
    3)change sign of the cyl,
    -3.00 -> +3.00
    4)alter axis (plus 90 degree)
    30 + 90 = 120

    Finally the answer,
    +2.00/+3.00 x 120

    TQ..=)
    Wassalam..

    ReplyDelete
  46. assalamualaikum.
    hope this question not overlap with anyone... =)
    if yes ples change ur question

    q35
    minus cyl form:
    +5.00/-2.00 @ 120

    convert to plus cyl form:
    = +3.00/+2.00@30

    ReplyDelete

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