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Small Solver Program
02-18-2019, 07:46 PM
Post: #17
RE: Small Solver Program
(02-18-2019 05:20 AM)Thomas Klemm Wrote:  If you compare your algorithm with Newton's method:

\(x_{n+1}=x_{n}-\frac {f(x_{n})}{f'(x_{n})}\)

you may notice that the number in register 0 should in fact be \(f'(x_{n})\) or at least a good approximation thereof.

Yes. Gamo already posted this method some time ago in the General Software Library. I have mentioned several times that the first input it NOT a guess for the root but an estimate for the function's DERIVATIVE.

For more details take a look at this post: http://www.hpmuseum.org/forum/thread-123...#pid111680

Gamo, you really should correct and update the instructions. Here it still says:
Quote:Enter 2 guesses closest to the root.

But again: that's NOT true. The first input is NOT a guess for the root. You now have seen a variety of cases that prove it.

Dieter
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Messages In This Thread
Small Solver Program - Gamo - 02-14-2019, 05:25 AM
RE: Small Solver Program - Thomas Klemm - 02-14-2019, 07:06 AM
RE: Small Solver Program - Albert Chan - 02-15-2019, 12:07 AM
RE: Small Solver Program - Thomas Klemm - 02-15-2019, 06:26 PM
RE: Small Solver Program - Albert Chan - 02-15-2019, 09:16 PM
RE: Small Solver Program - Thomas Klemm - 02-16-2019, 03:58 AM
RE: Small Solver Program - Albert Chan - 11-03-2019, 03:14 PM
RE: Small Solver Program - Albert Chan - 11-10-2019, 07:02 PM
RE: Small Solver Program - Albert Chan - 12-01-2019, 12:13 AM
RE: Small Solver Program - Csaba Tizedes - 02-16-2019, 12:24 PM
RE: Small Solver Program - Thomas Klemm - 02-16-2019, 01:42 PM
RE: Small Solver Program - Csaba Tizedes - 02-16-2019, 03:24 PM
RE: Small Solver Program - Gamo - 02-17-2019, 02:57 AM
RE: Small Solver Program - Thomas Klemm - 02-17-2019, 09:06 AM
RE: Small Solver Program - Gamo - 02-17-2019, 02:33 PM
RE: Small Solver Program - Thomas Klemm - 02-17-2019, 04:57 PM
RE: Small Solver Program - Gamo - 02-18-2019, 03:49 AM
RE: Small Solver Program - Thomas Klemm - 02-18-2019, 05:20 AM
RE: Small Solver Program - Dieter - 02-18-2019 07:46 PM
RE: Small Solver Program - Thomas Klemm - 02-18-2019, 10:22 PM
RE: Small Solver Program - Albert Chan - 02-19-2019, 01:10 AM
RE: Small Solver Program - Csaba Tizedes - 02-19-2019, 08:39 AM
RE: Small Solver Program - Thomas Klemm - 02-20-2019, 05:31 AM
RE: Small Solver Program - Csaba Tizedes - 02-25-2019, 08:39 PM
RE: Small Solver Program - Thomas Klemm - 02-20-2019, 07:22 AM
RE: Small Solver Program - Thomas Klemm - 02-24-2019, 09:21 AM
RE: Small Solver Program - Thomas Klemm - 02-25-2019, 11:00 PM
RE: Small Solver Program - Albert Chan - 01-04-2020, 07:49 PM



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