F' on hp 15c le

03122016, 11:13 PM
Post: #1




F' on hp 15c le
Can't remember program using complex capability of hp 15c le to solve f'x = 0 in order to find a max/min of f'x.
This was from several years ago...somebody contributed a real neat short elegant program! f(x) is defined in program 0, f'(x)would be in program 1, dx in register .0, "x" result in program 1 would be plugged into program 0 to find f(X) at that point. 

03122016, 11:35 PM
Post: #2




RE: F' on hp 15c le  
03122016, 11:42 PM
(This post was last modified: 03122016 11:42 PM by Marcio.)
Post: #3




RE: F' on hp 15c le
That's pure awesomeness.
Thanks for posting. 

03132016, 12:26 AM
Post: #4




RE: F' on hp 15c le
That's the one!
I'm glad that the post included my struggle to understand the problem with using change sign with complex numbers as well...would have forgotten that! 

03132016, 07:28 AM
Post: #5




RE: F' on hp 15c le
(03132016 12:26 AM)lrdheat Wrote: That's the one! It seems it's time to dust off the 41Z... more to come. "To live or die by your own sword one must first learn to wield it aptly." 

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