Complex roots in CAS
04-20-2017, 03:24 PM
Post: #1
 KeithB Member Posts: 211 Joined: Jan 2017
Complex roots in CAS
I tried using solve(-x^2-2x=5) but got [] as an answer. Is there a different command to get complex roots?
04-20-2017, 03:33 PM (This post was last modified: 04-20-2017 03:36 PM by Tim Wessman.)
Post: #2
 Tim Wessman Senior Member Posts: 2,197 Joined: Dec 2013
RE: Complex roots in CAS
csolve(-x^2-2x=5)

It the toolbox -> CAS -> Solve you have 1 Solve 2 Zeros 3 Complex Solve 4 Complex Zeros

TW

Although I work for the HP calculator group, the views and opinions I post here are my own.
04-20-2017, 03:52 PM
Post: #3
 KeithB Member Posts: 211 Joined: Jan 2017
RE: Complex roots in CAS
Thanks, don't know how I missed that, since I found solve()!
04-20-2017, 04:37 PM
Post: #4
 Carlos295pz Senior Member Posts: 318 Joined: Sep 2015
RE: Complex roots in CAS
You can only use solve() by activating "Use i" to consider imaginary results.

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