solve the following problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg69356] solve the following problem*From*: Alexandr Alexandr <a223253100 at yahoo.com>*Date*: Thu, 7 Sep 2006 23:59:13 -0400 (EDT)

How would I solve the following problem with Mathematica? x'(t) + x(t-1) = 0. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com