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- Newsgroups: sci.math.symbolic
- Path: sparky!uunet!snorkelwacker.mit.edu!bloom-picayune.mit.edu!news
- From: Matthias Imhof <gondwana@basalt.mit.edu>
- Subject: mathematica solve and rules
- Message-ID: <1992Sep3.004655.21678@athena.mit.edu>
- Sender: news@athena.mit.edu (News system)
- Nntp-Posting-Host: basalt.mit.edu
- Organization: Massachvsetts Institvte of Technology
- Date: Thu, 3 Sep 1992 00:46:55 GMT
- Lines: 40
-
- when i use solve in mma, i get
-
- u4 y4 y4
- {{a -> ----- - -----, b -> --,
- 120 h 120 h 24
-
- u2 h u4 y2 h y4 y2
- c -> --- - ---- - --- - ----, d -> --,
- 6 h 36 6 h 18 2
-
- 3 3
- u0 h u2 7 h u4 y0 h y2 h y4
- e -> -- - ---- + ------- - -- - ---- + -----, f -> y0}
- h 6 360 h 3 45
-
- }
-
- but what i actally want is something like
-
- u4 y4 y4
- a = ----- - -----, b = --,
- 120 h 120 h 24
-
- u2 h u4 y2 h y4 y2
- c = --- - ---- - --- - ----, d = --,
- 6 h 36 6 h 18 2
-
- 3 3
- u0 h u2 7 h u4 y0 h y2 h y4
- e = -- - ---- + ------- - -- - ---- + -----, f = y0}
- h 6 360 h 3 45
-
-
- which defines the solution to be a, b, c, d, e and f and not just the
- transform rules which could be applied
-
- is there a way to do that? can someone explain the concept of rules and
- definitions?
-
- matthias
-