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GCE O Level Oct/Nov 2012 E-Maths 4016 Paper 1 Suggested Answers & Solutions

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Tuition given in the topic of Miss Loi the Tutor from the tuition centre desk of Miss Loi at 11:53 pm (Singapore time)

Act I, Scene 2
Miss Loi’s Temple, Courtyard

TWAAANG! …

The playing of her guzheng was interrupted by hurried footsteps.

[Enter CHIEF DISCIPLE]

The Chief Disciple of The Temple appeared and rushed forward to kneel on one knee before the High Priestess.

Disciple Loi

My High Priestess 教主! Please forgive me for my interruption! But the thousands on our Facebook Page are getting impatient!

She stopped mid-way through her slooooooow tune.

High Priestess Loi

These days there’s no time to even sit down and play a song after a late, late joss sticks session on the eve of EMaths Paper 2.

Very well then …

Suddenly, she began to play her guzheng faster and faster …

twaaang! twaaang! twaaang! TWAANG! TWAANG! TWAANG!

… until the following shot out from within the strings on the musical instrument.

Click the Like button and grab it here!

GCE O Level 2012 EMaths 4016 Paper 1 Solutions
Access it here if you’re having trouble accessing it on Facebook using your state-of-the-art smartphone :(

N.B. As usual, please, please leave a comment should you spot any mistake in the solution. As uttered by the High Priestess, she was still deep within a joss sticks session just an hour ago!

Next, she threw out another swarm of daggers …

Now for Paper 2: Here’s a list of possible topics that may appear for tomorrow’s Paper 2.

  1. Algebra (changing the subject of a formula, simultaneous equations, completing the square)
  2. Arithmetic (percentages, ratios, interest, money & hire purchase, speed etc. – may still appear even though P1 already contains some)
  3. Problems involving quadratic equations
  4. Trigonometry (three-dimensional problems, bearing, angles of elevation/depression etc.)
  5. Probability
  6. Statistics (cumulative frequency curve, box & whisker)
  7. Mensuration
  8. Geometry (properties of circles)
  9. Coordinate geometry
  10. Similarity & congruency
  11. Graphs (incl. plotting)
  12. Sets & Venn diagrams
  13. Matrices
ALL THE BEST for EMATHS PAPER 2 & GANBATTE!

[EXEUNT]

頑張って!!!

Revision Exercise

To show that you have understood what Miss Loi just taught you from the centre, you must:

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Comments & Reactions

32 Comments

  1. Jason's Avatar
    Jason commented in tuition class


    2012
    Oct
    24
    Wed
    12:42am
     
    1

    Hi Miss Loi !

    5) Will i still get the mark for value of a = 2 if i did not give two ans a=2 and a=-2 and then reject a=-2?

    12a) Is it ok if i put 161 1/3 cm as an exact ans?

    14) For entire bearing qn, if i got my point P wrong for first part, would they accept (error carried forward) for part b and c? And still award marks?

    Thanks for taking time to read!

  2. Edison's Avatar
    Edison commented in tuition class


    2012
    Oct
    24
    Wed
    8:18am
     
    2

    For Q22b) AB is an exact answer. Shouldnt the answer be AB = 11.4378782 ( 7 digits)?



    • 2012
      Oct
      24
      Wed
      3:21pm
       
      2.1

      @Edison: This is something Miss Loi really doesn't like :?

      Apparently all Casio/Sharp calculators used in the exam halls showed 11.4378782 which appears to be exact (since not all digits are used).

      On the other hand, a check with online calculators (like one or this one, as well as the ones residing in your Windows or Mac will yield something like 11.43787820165426 ...

      As such, it's doubtful that Cambridge really intends it to be this way so Miss Loi believes some leeway will be given accordingly - especially if you've stated that clearly it's meant to be exact or approximated.

  3. Despeate Math-er's Avatar
    Despeate Math-er commented in tuition class


    2012
    Oct
    24
    Wed
    9:20am
     
    3

    Hi Miss Loi!! For question 15, I forgot to write the properties such as the angle at centre = 2 angles at Oce, but since they are all only 1 mark questions, do I still get the mark?

  4. Tyler's Avatar
    Tyler commented in tuition class


    2012
    Oct
    24
    Wed
    9:29am
  5. Stacey's Avatar
    Stacey commented in tuition class


    2012
    Oct
    24
    Wed
    10:21am
     
    5

    May I ask ,why is the question on radius of A which is 50% greater than radius of B is squared instead of being cubed when finding mass? And it is to find the ratio of these two unknowns :)

  6. Dudeism's Avatar
    Dudeism commented in tuition class


    2012
    Oct
    24
    Wed
    5:38pm
     
    6

    Hi Ms Loi,

    For paper 1, is it okay to leave decimal answers in 4 sig figure?

    Thank you!

  7. Clarence's Avatar
    Clarence  commented in tuition class


    2012
    Oct
    24
    Wed
    6:45pm
     
    7

    Hey Miss Loi,

    For question 25(a), since they asked us to express 'as simply as possible', don't we have to extract out the common factors for the answers?

    Or are both answers for 25(a)(i), (ii), (iii), accepted? I.e. extracted and not extracted.

    Thank you!

    Clarence :)

  8. Denton's Avatar
    Denton  commented in tuition class


    2012
    Oct
    24
    Wed
    7:24pm
     
    8

    For question 23 c, is it okay if I put 47.9 instead of the full thing?

  9. Joel's Avatar
    Joel commented in tuition class


    2012
    Oct
    24
    Wed
    8:22pm
     
    9

    For the bearing question in paper 1,if I did not put it in 1d.p. would we get penalised?

  10. ---'s Avatar
    --- commented in tuition class


    2012
    Oct
    24
    Wed
    11:27pm
     
    10

    For 25a, i take out the common factor and put it as the answer
    Will i get full marks?

  11. winnie's Avatar
    winnie commented in tuition class


    2012
    Oct
    25
    Thu
    10:31am
  12. asdfasf's Avatar
    asdfasf commented in tuition class


    2012
    Oct
    25
    Thu
    12:00pm
     
    12

    Hi...if i never put curly line under vector, is -1 for presentation only right? or -3? D:

  13. Raymond's Avatar
    Raymond commented in tuition class


    2012
    Oct
    25
    Thu
    11:29pm
     
    13

    Hi! Can the statistic answer be 161(3sf)? cos I thought statistic answers should not leave in fraction? As in the case of the calculator too.

  14. Raymond's Avatar
    Raymond commented in tuition class


    2012
    Oct
    26
    Fri
    3:07pm
     
    14

    Hi sorry but 1 more question from me. If my answer for qn 17c is male but I got 19.4% due to misunderstanding of the qn, will I get 1 or 0 mark?

  15. rongrong's Avatar
    rongrong commented in tuition class


    2014
    Oct
    14
    Tue
    6:01pm
     
    15

    Hi! Do we leave bearing in whole number or it can contain decimal place?

5 Reactions

  1. Tweetback
    Miss Loi tweeted


    2012
    Oct
    23
    Tue
    4:05pm
     
    16

    Joss Sticks session ended really, really late tonight :/... http://t.co/t9abU6rc

  2. Tweetback
    Miss Loi tweeted


    2012
    Oct
    23
    Tue
    4:07pm
     
    17

    #olevel #emaths paper 1 full suggested solutions: http://t.co/RN8iq4Hl Good luck for your #emath paper 2!



  3. 2012
    Oct
    24
    Wed
    12:59am


  4. 2012
    Oct
    24
    Wed
    1:21am
     
    19

    #olevel #emaths paper 1 full suggested solutions: http://t.co/RN8iq4Hl Good luck for your #emath paper 2!

  5. Tweetback
    Leon Goh tweeted


    2012
    Oct
    24
    Wed
    11:01am

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