Probably a No-Brainer
Roger Guay
irog at mac.com
Thu Dec 27 14:31:39 EST 2018
You are so clever, Herman! Yes, the idea is to write it out into a field.
This is great for the Taylor series, but how would one generalize this so that we could expand any fctn of x and n in the “genFctn” field into the “expandedFctn” field
Sorry to take up so much of your time.
Thanks,
Roger
> On Dec 27, 2018, at 11:02 AM, hh via use-livecode <use-livecode at lists.runrev.com> wrote:
>
> You don't want to compute it but want to write it out into a field?
>
> on mouseUp
> put taylorsum(4,"x") into fld "OUT"
> end mouseUp
>
> function taylorsum n,x -- n is the degree, x the function argument
> put "1" into s -- or: put x &"^0/0!" into s
> repeat with i=1 to n
> put " + " & x &"^"& i &"/"& i &"!" after s
> end repeat
> return char 1 to -1 of s
> end taylorsum
>
> taylorsum(4,"x") yields --> 1 + x^1/1! + x^2/2! + x^3/3! + x^4/4!
> taylorsum(4,"2") yields --> 1 + 2^1/1! + 2^2/2! + 2^3/3! + 2^4/4!
>
>
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