5 thoughts on “Recursive Expressions – 1

  1. Why do we conclude that answer or x should only be positive?
    I am asking from the algebraic perspective if x= 1/(3+x) then id x is negative the expression still holds.

    • Because every individual term in the expression is positive (1+3/1+3/1+3/1+…). For x = 1/(3+x) there will probably be two solutions, one positive and one negative (it is a quadratic after all). But the expression given, consisting as it does entirely of positive quantities, cannot yield a negative result.


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