Plot[] problem (plnr) - help !!!

*To*: mathgroup at smc.vnet.net*Subject*: [mg15935] Plot[] problem (plnr) - help !!!*From*: Alexander Sirotkin <root at borjch.math.tau.ac.il>*Date*: Wed, 17 Feb 1999 23:34:03 -0500*Organization*: Tel-Aviv University Computation Center*Sender*: owner-wri-mathgroup at wolfram.com

Hi. I'm trying to do most trivial and simple thing - define some function and then Plot[] it. However, I get some very weird error - " ...is not a machine-size real number at ..." Here is the code : a[0]==1 a[1]==0.99/50000 H[w] == 20Log[10,Sum[a[k] Exp[I 2Pi w(-k)], {k,0,1}]] Clear[H] Plot[H[w], {w, 1, 100}] I've seen some articles (even at www.wolfram.com) about that problem, but NONE of them proposed a working solution !!! Just putting Evaluate[] inside the Plot[] does nothing...