π
<-

Problem with csolve

:32tins: :32tinsktpb: :32tinsktpn: :32tinscas: :32tinstpkc: :32tinstpktpb: :32tinstp: :32tinscastp: :32tinscmc: :32tinscx: :32tinscxcas:

Problem with csolve

Postby Andrele » 04 Sep 2019, 18:03

Hi there,
I have an issue using csolve/czeros.
It is giving me only one root and it is otherwise giving me infinity and minus infinity whilz there are for sure 3 complex roots.
Please help me !
You do not have the required permissions to view the files attached to this post.
User avatar
Andrele
Niveau 0: MI (Membre Inactif)
Niveau 0: MI (Membre Inactif)
Level up: 0%
 
Posts: 4
Joined: 04 Sep 2019, 17:58
Gender: Not specified
Calculator(s):
MyCalcs profile

Re: Problem with csolve

Postby critor » 04 Sep 2019, 18:22

Sorry, but there is no complex root for the equation you're showing us.
Image
User avatar
critorAdmin
Niveau 19: CU (Créateur Universel)
Niveau 19: CU (Créateur Universel)
Level up: 54.4%
 
Posts: 42489
Images: 17332
Joined: 25 Oct 2008, 00:00
Location: Montpellier
Gender: Male
Calculator(s):
MyCalcs profile
YouTube: critor3000
Twitter: critor2000
GitHub: critor

Re: Problem with csolve

Postby Andrele » 04 Sep 2019, 18:37

I dont think so.
There must be to complex conjugated solutions.
User avatar
Andrele
Niveau 0: MI (Membre Inactif)
Niveau 0: MI (Membre Inactif)
Level up: 0%
 
Posts: 4
Joined: 04 Sep 2019, 17:58
Gender: Not specified
Calculator(s):
MyCalcs profile

Re: Problem with csolve

Postby Andrele » 04 Sep 2019, 18:39

I have found by long calculations on paper
3.99+3.16*10^-4i and 3.99-3.16*10^-4i
Why doesnt it show these roots with csolve ?
You do not have the required permissions to view the files attached to this post.
Last edited by Andrele on 04 Sep 2019, 18:41, edited 1 time in total.
User avatar
Andrele
Niveau 0: MI (Membre Inactif)
Niveau 0: MI (Membre Inactif)
Level up: 0%
 
Posts: 4
Joined: 04 Sep 2019, 17:58
Gender: Not specified
Calculator(s):
MyCalcs profile

Re: Problem with csolve

Postby Andrele » 04 Sep 2019, 18:40

BTW, thanks a lot for ur answer
User avatar
Andrele
Niveau 0: MI (Membre Inactif)
Niveau 0: MI (Membre Inactif)
Level up: 0%
 
Posts: 4
Joined: 04 Sep 2019, 17:58
Gender: Not specified
Calculator(s):
MyCalcs profile

Re: Problem with csolve

Postby Hisham » 05 Sep 2019, 07:26

1+0.8x=0, multiplying both sides by 10 we get 10+8x=0 ;)
Now 8x=-10 and finally x=-5/4 :)
As Critor rightly said, there are no complex roots for given equation.
Best,

Hisham ;)
User avatar
HishamPremium
Niveau 8: ER (Espèce Rare: nerd)
Niveau 8: ER (Espèce Rare: nerd)
Level up: 12.9%
 
Posts: 140
Joined: 01 Mar 2017, 20:52
Gender: Not specified
Calculator(s):
MyCalcs profile


Return to Problèmes divers / Aide débutants

Who is online

Users browsing this forum: No registered users and 22 guests

-
Search
-
Social TI-Planet
-
Featured topics
Ndless for CX 4.5.5 / CX II 6.2.0
Comparaisons des meilleurs prix pour acheter sa calculatrice !
"1 calculatrice pour tous", le programme solidaire de Texas Instruments. Reçois gratuitement et sans aucune obligation d'achat, 5 calculatrices couleur programmables en Python à donner aux élèves les plus nécessiteux de ton lycée. Tu peux recevoir au choix 5 TI-82 Advanced Edition Python ou bien 5 TI-83 Premium CE Edition Python.
Enseignant(e), reçois gratuitement 1 exemplaire de test de la TI-82 Advanced Edition Python. À demander d'ici le 31 décembre 2024.
Aidez la communauté à documenter les révisions matérielles en listant vos calculatrices graphiques !
12345
-
Donations / Premium
For more contests, prizes, reviews, helping us pay the server and domains...
Donate
Discover the the advantages of a donor account !
JoinRejoignez the donors and/or premium!les donateurs et/ou premium !


Partner and ad
Notre partenaire Jarrety Calculatrices à acheter chez Calcuso
-
Stats.
2368 utilisateurs:
>2346 invités
>13 membres
>9 robots
Record simultané (sur 6 mois):
32248 utilisateurs (le 01/09/2025)
-
Other interesting websites
Texas Instruments Education
Global | France
 (English / Français)
Banque de programmes TI
ticalc.org
 (English)
La communauté TI-82
tout82.free.fr
 (Français)