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Why the loop gain no result?

  • To: mathgroup at
  • Subject: [mg126061] Why the loop gain no result?
  • From: Huafeng Cao <geotom.cao at>
  • Date: Sat, 14 Apr 2012 03:10:07 -0400 (EDT)
  • Delivered-to:

Dear all,
    I use the' For' loop to solving an equation, such as :
    For[i = 1, i < 5, i++, a = i; Solve[a*x^2 - 2 x + 1 == 0, x]].The
'a' in the body must be updated in every loop with the 'i'. But i
cann' t gain the result,Somewhere is disorder? I am confused.
  Thinks in advanced!


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