Coefficient[] bug?

*To*: mathgroup at yoda.ncsa.uiuc.edu*Subject*: Coefficient[] bug?*From*: "Keith R. Slavin" <keith at videovax.tv.tek.com>*Date*: Thu, 06 Dec 90 11:13:40 PST

I seem to be having a problem with the behaviour of Coefficient[] in Mathematica, namely if I have a series such as sum = ... + a n + b + c/n +.... then Coefficient[sum,n] gives a, Coefficient[sum,1/n] gives c, but Coefficient[sum,1] does NOT give b, but zero instead! This is causing me problems, and I cannot see a simple work-around. Thankyou in advance, Keith Slavin Tektronix Inc, Beaverton, Or (503) 627 4907