8 thoughts on “Recursive Expressions – 2

  1. Could you please help me understand how you found the lower limit i.e x should be greater than 4/9. I did refer to the previous post as well.But I am not clear with it.
    Thanking you in advance.

  2. Could you please help me understand how you got the lower limit as greater than 4/9. I did try going through the previous post on this topic.Still I need more clarity on this.

    • It is rt(4+rt(4-something)). Now this ‘something’ is within a rt sign, so cannot be negative by definition. Hence, it must be rt(4+rt(less than 4)) which is less than rt(4+rt4).

      regards
      J

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