[Jprogramming] Calculus & Newton's iteration

[Martin Kreuzer]

N is at most times sensitive to its start value ...
it does work in this case (but as you stated, it will not be 
neccessary in this case):

    (4.9+2&%) N^:1 (_0.1)
_0.1755
    (4.9+2&%) N^:2 (_0.1)
_0.275539
    (4.9+2&%) N^:4 (_0.1)
_0.403614
    (4.9+2&%) N^:14 (_0.1)
_0.408163
    (4.9+2&%) N^:_ (_0.1)
_0.408163

-M


At 2020-10-24 15:52, you wrote:
>I just realized that I don't need Newton: 2/x + 4.9 = 0? 2/x = 49/10 
>2 = 49/10 * x x = 2/(49/10) = 2*(10/49) = 20/49 = 0.4081632653 Skip 
>Cave Cave Consulting LLC On Sat, Oct 24, 2020 at 10:12 AM Skip Cave 
><skip at caveconsulting.com> wrote: > The Newton Raphson root finder 
>using the new J definition of derivative is: > > N=: 1 : '- u % u 
>deriv_jcalculus_ 1' > > > How would I use N to solve for x in the 
>equation 2/x + 4.9 = 0? > > > Skip Cave > Cave Consulting LLC > 
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