Suggested Answers to 2014 A Level H1 Math 8864

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Hi, we tried to rush it out. This might not be the most appropriate suggested solutions. Feel free to comment and discuss. Let me know if I make mistakes. Thanks!

Also, we might not respond too fast as we will be trying to do the paper 2 for h2 math later too.

ERRATA:

4(ii) I made a silly mistake substituting the equations back in. You should get (4, 18) and (8,6) as the answers.

Many thanks to those who point out my mistakes.

 

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23 Responses to Suggested Answers to 2014 A Level H1 Math 8864

  1. Anon says:

    Hi for 9(ii), why is P(X>/4) not equal to =1-P(X</4) since 1,2,3,4,5,6,7,8 less than or equal to 4, there will still be 4 lacks having at most two cakes containing fruit?

  2. Hi says:

    Hey thx!! Last part ans can’t see !!

  3. Anon says:

    For 12(ii), shouldn’t the variance be B1+..+B7 ~N (525, 7(64^2) = (525, 28672)?

  4. Anon says:

    Hahaha was waiting for this since ystd to practice the stats question! Im not your student but i really appreciate the effort!! Didnt do so well for p1 ystd so really counting on p2 now! Thanks again for the answers 🙂

    • K.S. Teng says:

      Hi
      No worries. Not so sure if I’m right either. Rushed it this morning haha all the best for p2 later! 🙂 Yes you still have 100 marks!! A lot of students tends to over look the papers have equal weightage haha all the best!

  5. anon says:

    @Anon: 12(ii) is right – 64 is already the variance dont need to square that

    shouldnt 11(v) be (37/300)(36/299)?

  6. Asaph says:

    Thanks soo much for the answers! 🙂 Can i have your opinion on the marks range for A and B for this paper?

  7. Thank you!!! says:

    Hello! For question 4, when you substitute the second equation in, it becomes 5x^2+2y^2+2xy , but the original equation is 5x^2+y^2-2xy. Is it an error or did I miss out something as my answer differs

  8. Tiffany says:

    qn 4ii, why when you substitute in the equation, it became + 2(x)(30-3x)? IF following the ans in part i should it be -2x(30-3x)? Additionally, what do you think will be the mark range for A?:) tks for providing soln!

  9. anon says:

    Hi I disagree with 11 (v). I don’t agree that binomial should be used as the probability is not constant? Instead I used 37/300 x 36/299

  10. Lynn says:

    hi! may i know if for the question 1 and 3ii, is it acceptable if i wrote the answer in full decimal?

    • admin says:

      Hi,
      They want exact answers, even the 9dp full string of digits aren’t exact. :/
      Don’t worry, you still get credit for the working!

  11. Seth says:

    Made some really stupid mistakes on my part. Btw I asked my teacher and she said bell curve for H1 math for A is 70 and above. Hope this is true!

  12. Augustine says:

    Hi:D For question 1, your suggested answer is 5-square-root 5 over 2. My answer was
    5/2 – 1/2( square-root 5). Both result in the same answer. Would they penalize if the answer is not as suggested?
    Thanks:D

  13. MathNoob says:

    Thank you so much for posting! More motivation for subsequent papers

Comments are closed.