Strange "not a symbol or valid symbol name" error
- To: mathgroup at smc.vnet.net
- Subject: [mg60213] Strange "not a symbol or valid symbol name" error
- From: "Flip" <fliptomato at gmail.com>
- Date: Wed, 7 Sep 2005 04:04:13 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Greetings all, I'm using Mathematica 5.0 and have been getting a
strange error message:
Unique::usym :
10000000000 is not a symbol or a valid symbol name
This comes from the following integral:
Integrate[E^(-x) Sqrt[x^2-9], {x,3,5}]
The limits of integration don't matter much so long as they keep the
integrand real.
I don't understand this and am not quite sure how to fix the problem.
(It's a well defined definite integral, right? It's real in the domain
of integration and nondivergent.)
Thanks,
Flip