Re: Displaying all roots of a number Message #2 Posted by Michael Andersson on 3 June 2008, 3:57 a.m., in response to message #1 by Hal Bitton in Boise
Hi,
You should be able to use "PROOT" for this purpose. The command gives all the roots of an arbitrary polynomial and by transforming your problem into a plynomial equaton by setting the coefficient you don't need to zero you can find the roots.
For example to find all the fifth roots to 2+3i transform this into the equation z^5+(2+3i)=0, on the 50g put
[ 1 0 0 0 0 (2,3) ]
(where the zeros are the coefficients for z^4 down to z^1) on the stack and press PROOT (found under "NUM.SLV"/"POLY").
The results is (approximately):
(1.27 , 0.25)
(0.88 , 0.95)
(0.15 , 1.28)
(0.63 , 1.13)
(1.17 , 0.54)
Hope this works.
Regards
Michael
