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Method of undetermined coefficent

  1. May 13, 2005 #1
    method of undetermined coefficent is applied when g(x) is exponent, polynomial or trigonometric function. What will happen if g(x)= lnx or some other log function
    ay`` + by`+ cy = g(x), where g(x)=log function. What method to use then?
  2. jcsd
  3. May 13, 2005 #2


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    If "a","b","c" are constants wrt "x",then Lagrange's method cannot fail.The method of variation of constants.

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