1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Hi Guest, welcome to the TES Community!

    Connect with like-minded education professionals and have your say on the issues that matter to you.

    Don't forget to look at the how to guide.

    Dismiss Notice

Anyone teaching A-Level FP1? Can you please help me with this question?

Discussion in 'Mathematics' started by worldcitizen, Apr 30, 2012.

  1. The roots of the equation x^3 + ax + b = 0 are A, B and C. Find the equation with roots A/C + C/B, C/A +A/B and A/B + B/A.

  2. afterdark

    afterdark Lead commenter

    are you sure about the last root?
    shouldn't it be A/B + B/C ?

  3. You may be right. so it must be a misprint in the book. it is in OCR PF1 book.
  4. No they don't work. It has to be more than cyclical symmetry - silly old me.
    I think the only combinations that could work are A/B + B/A; B/C + C/B; C/A + A/C.

Share This Page