Question for Partial differential summationseries
- To: mathgroup at smc.vnet.net
- Subject: [mg122801] Question for Partial differential summationseries
- From: dai <dahfsys at gmail.com>
- Date: Fri, 11 Nov 2011 04:52:55 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
The function defined as follow x = X[t]; y = Y[i, t]; p = P[i, xv]; w = Sum[y*p, {i, 1, N}]; When we excuted partial differential "w" by "y" the exact solution is "p" (or P[i, xv]). However, the solution in Mathematica package is Sum[p, {i, 1, N}]. How can I obtain the correct solution? please help.
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