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 (12 KiB) downloaded 52 time(s).

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

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.

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.