A potatoe of a residu!

*To*: mathgroup at yoda.physics.unc.edu*Subject*: A potatoe of a residu!*From*: tleaf at leaf.lanl.gov (Leaf Turner)*Date*: Thu, 17 Sep 92 14:53:38 MDT

What should be spelled C-I-N-C-H is the result of inputting Residue[1/Sinh[z],{z,I Pi}] . This should be the same as inputting Residue[1/(I Sin[-I z]),{z,I Pi}] . Both inputs result in the output Residue[Csch[z],{z, I Pi}]. To feed Mathematica the dictionary necessary to get over the hurdle, one must input Residue[2/(Exp[z]-Exp[-z]),{z,I Pi}]. This results in the correct output, -1. Eeeeeeeeeeeeeekk!