Make sure you're in complex & approx modes, then SOLVEX the equation x^3 + 1 = 0
For the other case, SOLVEX the equation x^3-2-11*i=0
For the other case, SOLVEX the equation x^3-2-11*i=0
--- On Wed, 12/31/08, joecolannino <joecolannino@...> wrote:
> From: joecolannino <joecolannino@...>
> Subject: [50g] Complex Roots
> To: 50g@yahoogroups.com
> Date: Wednesday, December 31, 2008, 1:15 PM
> Does anyone have a program written for the HP 50G that will
> give all
> complex roots of a number? For example,the cube roots of
> -1 are
> {[1+sqrt(3)]/2, -1, and [1-sqrt(3)]/2 } but the HP 50G
> will give only
> the first. Trying to evaluate the cube root of 2+11i it
> chokes
> altogether though the answers are clearly {2+i,
> -1.866+1.232i
> (approx), -0.1340-2.232i (approx)}.
>
> Joe