Displaying all roots of a number « Next Oldest | Next Newest »

 ▼ Hal Bitton in Boise Unregistered Posts: 291 Threads: 43 Joined: Jun 2007 06-03-2008, 02:27 AM Hi Everybody, Does the 50G (or 48g for that matter) have any functionality whereby all the roots of a number (namely a complex number) can be displayed? Ie...if I take the fifth roots of a complex number, I would be able to see all five roots. Thanks and best regards, Hal ▼ Michael Andersson Unregistered Posts: 16 Threads: 1 Joined: Jun 2008 06-03-2008, 03:57 AM 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 ▼ Hal Bitton in Boise Unregistered Posts: 291 Threads: 43 Joined: Jun 2007 06-03-2008, 10:55 AM Thanks Michael, That works nicely.

 Possibly Related Threads… Thread Author Replies Views Last Post HP 50g - displaying result in engineering format Sean Freeman 10 3,297 11-24-2013, 05:44 AM Last Post: C.Ret HP prime: logs and roots Alberto Candel 5 1,975 11-20-2013, 12:31 PM Last Post: Manolo Sobrino WP34s displaying text Steve B (Canada) 3 1,548 04-16-2013, 04:32 PM Last Post: Walter B HP-51G: Back to the honorable roots! Martin Paech 24 6,758 04-08-2012, 01:39 AM Last Post: db (martinez, ca.) 35s - find roots of 3rd and higher order equations Chris C 11 3,279 02-25-2012, 02:55 PM Last Post: Thomas Klemm HP-42S displaying Runic alphabet Bill (Smithville, NJ) 13 3,754 02-19-2012, 02:36 PM Last Post: Bill (Smithville, NJ) Polynomial roots again ... fhub 13 3,673 12-28-2011, 12:49 PM Last Post: fhub Any expert for polynomial roots here? fhub 20 4,887 11-10-2011, 01:52 PM Last Post: Peter Murphy (Livermore) HP 15C Displaying Incorrect Values! Ian McParland 13 3,474 04-20-2011, 06:39 PM Last Post: BobVA Is there something going on out there? (or Getting Back to My Roots...) Vieira, Luiz C. (Brazil) 22 5,600 04-26-2010, 09:51 PM Last Post: Vieira, Luiz C. (Brazil)

Forum Jump: