HELP: Plot[]ing composite functions

*To*: mathgroup at smc.vnet.net*Subject*: [mg15946] HELP: Plot[]ing composite functions*From*: deus at post.tau.ac.il (Alexander Sirotkin)*Date*: Wed, 17 Feb 1999 23:34:09 -0500*Organization*: Tel-Aviv University Computation Center*Sender*: owner-wri-mathgroup at wolfram.com

Hello. Simple question - after definition of a functions which looks like this "H[w] == Log[10, 1 + Exp[I2Pi w]]" I try to Plot[] it and get the "... not machine size real number at ..." error. After reading lots of manuals and postings I came to a conclusion that it should be somehow related to Evaluate[]/Hold[] problems, but none of these manuals gave a solution to this problem. Any1 can help me ?