Past paper solutions - WJEC C1 May 2015 :

WJEC C1 May 2015 past paper solutions
Written solutions and methodology for the C1 paper (unofficial), click on image to download.

*** Please note small error as pointed out in the comments below (Thanks) ***

thumbnail of C1 May 2015

The questions to this paper can be found here

Like us on Facebook or follow us on Twitter to get notifications on uploaded past papers

If you spot any errors then please let me know. Also please leave any comments or questions and I'll respond as quickly as possible :-)

WJEC C1 May 2015 solutions
Tagged on:                 

4 thoughts on “WJEC C1 May 2015 solutions

  • March 28, 2016 at 5:07 pm
    Permalink

    Hi,
    Great work.

    Small error in Q5(a) of C1 2015 – You have missed the second -10k, which would give the correct answer of -25/4 (same for (b)).

    Cheers

    Reply
    • March 29, 2016 at 1:52 pm
      Permalink

      Thanks for pointing out the error Stephen. Much appreciated.

      Reply
  • April 11, 2016 at 6:49 pm
    Permalink

    small mistake Q2 b: should be (8√14)/4 = 2√14

    moot point but personally in Q3b I’d change your ‘x’ into ‘a’

    Q4b, you’ve missed a root.
    x-3= ±15/2
    ⇒ x=10.5 or -4.5

    Q6a should be ‘7x^2’ as 3rd term

    Please forgive me for saying last line of Q10 is messy
    x = 40 & (dee 2 y by dee x squared) = 3200/(40^3) ≻ 0 ⇒ ∃ minimum
    ∴ Min value of L = 40 + (1600/40) = 40 + 40 = 80m
    You’ve made a great resource :)

    Reply
    • April 12, 2016 at 1:09 pm
      Permalink

      Thanks Jilly. It appears that I may have rushed these solutions a little bit!
      I’ll endeavour to put up a “clean” copy when I have time.

      It’s great to hear that these resources are useful, makes the work worthwhile :-)

      Reply

Leave a Reply

Your email address will not be published.