Add new comment

Permalink

Hi, perhaps in the proof of the "doubling the cube" there is a typo. In the penultimate row should be 3x^2 to the second member. Not 3x.

Filtered HTML

  • Web page addresses and email addresses turn into links automatically.
  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.