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Basic single variable Secant (Newton-Raphson) Solver that just works
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Joined: 03/03/2014(UTC) Posts: 418  Was thanked: 125 time(s) in 96 post(s)
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I figured I am not the only one who can benefit from a simple numeric solver that "just works". It will likely become obsolete once Davide updates the Nonlinear Solvers plugin. Enjoy.  SolveNewtonRaphson.sm (13kb) downloaded 30 time(s). Edited by user 23 November 2016 22:10:30(UTC)
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Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)
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Interesting, but good thing Smath 5346 does it as well w/o all that complexity. Shouldn't it be constructed around "While" loop ? Remember that any invented iterative solver for Smath can't exceed better accuracy than around 12 decimals because of the granularty of Smath. The native Smath 'solve' has a universal structure wrt: 1. is implicit 2. the bracketing [x1,x2] 3. very easy to handle. Jean 
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Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)
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Alex, The Newton-Raphson code in your first post would surely work here in two cumbersome presentations. For this example, 'roots' is a better candidate. 
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Rank: Advanced Member Groups: Registered
Joined: 03/03/2014(UTC) Posts: 418 Was thanked: 125 time(s) in 96 post(s)
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If only either of the two could handle the units I would not need to go through all the trouble. They do not, hence I had to get inventive.
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Basic single variable Secant (Newton-Raphson) Solver that just works
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