Iterative application of FindRoot with adjusted started values

• To: mathgroup at smc.vnet.net
• Subject: [mg32990] Iterative application of FindRoot with adjusted started values
• From: steger at uni-greifswald.de (Thomas Steger)
• Date: Sat, 23 Feb 2002 02:38:09 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

```I use Table[] together with FindRoot[] to repeatedly solve a system of
equations numerically. Now I would like to give the starting value for
the first calculation as prespecified while all subsequent starting
values should equal the n-1 th solution.

Here is a simple example, where the starting value is fixed for all
calculations to follow.

Clear[g1, g2]
g1 = a x + b y == c;
g2 = d x + e y == f;
Clear[a, b, c, d, e, f]
a = 0.5; b = 0.1; c = 2; d = 0.9; e = 1; f = .2;
Clear[a]
Table[FindRoot[{g1, g2}, {x, 4}, {y, -4}], {a, 0.5, 1, 0.1}]

```

• Prev by Date: Inaccurate constants?
• Next by Date: Re: Mean
• Previous by thread: Inaccurate constants?
• Next by thread: Re: Iterative application of FindRoot with adjusted started values