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;

**+4.00/-2.00 x 180****-400/-2.00 x 175****+5.00/+3.00 @ 120****-11.00/-11.00 @ 65****-0.75/-0.25 x 42****+4.25/-1.25 x20****-6.75/-2.75 x 80****-22.00/-1.25 x174****-12.00/+5.00 x 155****+7.50/-2.00 x 25****-4.00/-2.00 x 180****+400/-2.00 x 175****+5.00/-3.00 @ 120****pl/-11.00 @ 65****-1.75/-0.25 x 42****+5.25/-1.25 x20****-6.25/-2.75 x 80****-22.00/-11.25 x174****-12.00/-5.00 x 55****+7.50/-2.00 x 125****-11.00/+5.00 x 35****+6.00/-2.50 x 105****+5.00/-2.00 x 180****-4.00/-3.00 x 175****+5.00/-3.00 @ 120****-11.00/-1.25 @ 65****+0.75/-0.25 x 42****-5.25/-1.25 x20****-6.75/-2.75 x 180****-22.00/-1.25 x72****-12.00/+5.00 x 5****+7.50/-4.00 x10****-4.00/-1.00 x 80****+400/-2.00 @ 90****+5.00/-2.00 @ 120****pl/-1.00 @ 165****-1.75/-0.25 @ 42****+5.25/-1.00 x120****-6.25/-2.75 x@80****-20.00/-1.00 x174****-11.00/-4.00 x 55****+7.75/-3.00 x 125****-1.00/+5.00 x 35****+6.00/+2.50 x 115****-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.

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

ReplyDelete+2.00/+2.00 X 90

question num 2..

ReplyDeleteminus cyl form;

-4.00DS/ -2.00DC X 175

Transpose to plus cyl form;

-6.00DS/ +2.00DC X 85

@raja nor shahila raja mohamad

ReplyDeletehuu~

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

answer for question no 3

ReplyDelete+8.00DS/-3.00DC X 120

no 4:

ReplyDeleteminus cyl form:

-11.00/-11.00 @ 65

transpose to plus cyl form:

-22.00 DS / + 11.00 DC x 65

No 5:

ReplyDeleteminus cyl form:

-0.75DS/-0.25DC x 42

plus cyl form:

-1.00DS/+0.25DC x 132

Q no 6

ReplyDeleteminus cyl form :

+4.25DS/ - 1.25DC x 20

tranpose to plus cyl form :

+3.00DS/ +1.25DC x 110

No7:.

ReplyDeleteminus cyl form:

-6.75/-2.75 x 80

transpose to plus cyl form:

-9.50/+2.75 x 170

Q9:

ReplyDeleteplus cyl form :

-12.00DS/+5.00DC x 155

transpose: minus cyl form:

-7.00DS/-5.00DC x 65

no 29:

ReplyDeleteminus cyl form

-6.75DS/-2.75DC X 180

plus cyl form

-9.50DS/+2.75DC X 90

Question 19:

ReplyDeleteanswer: -17.00/+5.00x145

question 20:

ReplyDeleteanswer:+5.50DS/+2.00DC x 35

question 21:

ReplyDelete-11.00/+5.00 x 35

-11+5= -6

answer: -6.00/-5.00 x 125

Q 15:

ReplyDeleteminus cyl form;

-1.75DS/-0.25DC x 42

transpose to plus cyl:

-2.00DS/+0.25DC x 132

salam..

ReplyDeleteanswer 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

quesition 27:

ReplyDeleteminus cyl form:

+0.75/-0.25x42

transpose to plus cyl form:

+0.50/+0.25x132

Assalamualaikum...

ReplyDeleteI would like to answer qs no. 44

+6.00/+2.50 x 115

minus cyl form:

+8.50/-2.50 x 25

Assalamualaikum...

ReplyDeleteI 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

salam..

ReplyDeleteQ28

minus cyl form :

-5.25/-1.25 x 20

transpose to plus cyl form :

-6.5/+1.25 x 110

Assalamualikum...

ReplyDeleteI 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

salam...

ReplyDeleteans for question 43:

plus cyl form:

-1.00/+5.00x35

minus cyl form:

+4.00/-5.00x125

QUESTION 43.

ReplyDelete-1.00DS/+5.00DCx35

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

x prasan same ngan org len..

ReplyDeleteQ:38

+5.25DS/-1.00DCX120

A: +4.25DS/+1.00DCX30

(TRANSPOSE INTO PLUS FORM)

no 13

ReplyDeleteans: +2.00/+3.00 X 120

question 23

ReplyDeleteans: +3.00/+2.00 X 90

QUESTION 10

ReplyDelete+7.50/-2.00 x 25

ans:+5.50/+2.00 x 115

QUESTION 24

ReplyDelete-4.00/-3.00 X 175

ANS:

-7.00/+3.00 X 85

salam...

ReplyDeletefirstly 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.

Question #39

ReplyDelete-6.25DS/-2.75DC@80

answer;

minus cyl form: -6.25DS/-2.75DCX170

plus cyl form: -9.00DS/+2.75DCx80

:))

Question #37

ReplyDelete-1.75DS/-0.25DC@42

minus cyl form: -1.75DS/-0.25DCX132

plus cyl form: -2.00DS/+0.25DCX42

bismillahirahmanirrahim...

ReplyDeletequestion 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

salam..

ReplyDeletei 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

question 11

ReplyDelete-4.00/-2.00x180

answer= -6.00/+2.00x90

question 33

ReplyDeleteminus cyl form

-4.00/-1.00 X 80

transpose to plus cyl form

-5.00/+1.00 X 170

question 44

ReplyDeleteplus cyl form

+6.00/+2.50 x 115

minus cyl form

+8.50/-2.50 x 25

Correction

ReplyDeletequestion 44

plus cyl form

+6.00 DS/+2.50 DC x 115

minus cyl form

+8.50 DS/-2.50 DC x 25

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

ReplyDeleteQ32

(-ve cyl)= +7.50DS/-4.00DC X 10

trnspose to(+cyl)= +3.50DS/+4.00 X 100

QUESTION 12

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

transpose to

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

Q40

ReplyDeletethe answer:

-21.00/+1.00x84

Q22 :

ReplyDeleteminus cyl form :

+6.00DS/-2.50DC x 105

transpose to plus cyl form:

+3.50DS/+2.50DC x 15

Q31

ReplyDelete-12.00/+5.00x5

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

Q41:

ReplyDelete-11.00/-4.00x55

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

Q41:

ReplyDelete-11.00/-4.00x55

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

Salam..

ReplyDeleteQuestion 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..=)

Salam...

ReplyDeleteQuestion 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..

assalamualaikum.

ReplyDeletehope 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