What do ya think about SymbolicSum?

*To*: mathgroup at yoda.physics.unc.edu*Subject*: What do ya think about SymbolicSum?*From*: mek at guinan.psu.edu (Mark E. Kotanchek)*Date*: Thu, 8 Apr 93 15:42:22 -0500

Trivial question here.... I was playing with Algebra`SymbolicSum` and noticed that although it worked in structures like SymbolicSum[k,{k,K}] K (1 + K) --------- 2 that, if I used a number instead of K, I didn't get a nice simple result; i.e., SymbolicSum[k,{k,6}] returned SymbolicSum[k, {k, 6}] rather than the expected "21" returned by using Sum[k,{k,6}]. Futhermore, Simplify[] and N[] didn't give me the numeric solution. To me, this behavior is inaccurate -- although, not strictly speaking a bug. Do you see any reason WRI shouldn't change SymbolicSum to operate with numbers as a symbol. For that matter, does WRI see any reason why the function works this way? Toodles, Mark. --- Mark Kotanchek Guidance & Control Dept - 363 ASB Applied Research Lab/Penn State P.O. Box 30 State College, PA 16804 e-mail: mek at guinan.psu.edu (NeXTmail) TEL: (814)863-0682 FAX: (814)863-7843