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Oichi		#1 Posted : 18 November 2023 14:47:14(UTC)
Rank: Advanced Member Groups: Registered Joined: 27/01/2023(UTC) Posts: 30 Was thanked: 3 time(s) in 3 post(s)		Hello, I want to solve a quartic polynomial with complex coefficients.. I tried "polyroots" function but it gives an error "cannot calculate",, Is there a plugin or a function that can solve a polynomial with complex coefficients in SMath? Thanks in advance Edited by user 19 November 2023 03:24:23(UTC)  | Reason: Not specified
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oscampo		#2 Posted : 19 November 2023 01:02:58(UTC)
Rank: Advanced Member Groups: Registered Joined: 10/12/2009(UTC) Posts: 249 Location: Cali, Colombia Was thanked: 87 time(s) in 66 post(s)		Hi, Here an example solved by using Maxima plugin: best, Oscar
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Oichi		#3 Posted : 19 November 2023 01:06:17(UTC)
Rank: Advanced Member Groups: Registered Joined: 27/01/2023(UTC) Posts: 30 Was thanked: 3 time(s) in 3 post(s)		Originally Posted by: oscampo Hi, Here an example solved by using Maxima plugin: best, Oscar How to put these answers of Maxima plugin inside a vector?
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Jean Giraud		#4 Posted : 19 November 2023 02:03:43(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		Originally Posted by: Oichi Hello, I want to solve a quartic polynomial with complex coefficients.. I tried "polyroots" function but it gives an error "cannot calculate",, Is there a plugin or a function that can solve a polynomial with complex coefficients in SMath? Thanks in advance If you have the complex quartic complex vector, the way to plot is via Lagrange Iterated Product. From there, your quartic is now a function in native Smath. You can find roots and more solving demands. Cheers ... Jean.
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overlord		#5 Posted : 19 November 2023 02:18:30(UTC)
Rank: Advanced Member Groups: Registered Joined: 23/07/2013(UTC) Posts: 1,129 Was thanked: 510 time(s) in 340 post(s)		You can use maple() too. Maple has a fsolve() function. Which uses floating-point arithmetic.
3 users thanked overlord for this useful post.		on 19/11/2023(UTC),  on 19/11/2023(UTC),  on 19/11/2023(UTC)
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oscampo		#6 Posted : 19 November 2023 02:25:02(UTC)
Rank: Advanced Member Groups: Registered Joined: 10/12/2009(UTC) Posts: 249 Location: Cali, Colombia Was thanked: 87 time(s) in 66 post(s)		Originally Posted by: Oichi How to put these answers of Maxima plugin inside a vector? A little trikiest
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2 users thanked oscampo for this useful post.		on 19/11/2023(UTC),  on 19/11/2023(UTC)
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Oichi		#7 Posted : 19 November 2023 03:23:58(UTC)
Rank: Advanced Member Groups: Registered Joined: 27/01/2023(UTC) Posts: 30 Was thanked: 3 time(s) in 3 post(s)		Okayy,,,The trick using num2str is so cool.. And thanks overlord, I didnt know about this maple one
1 user thanked Oichi for this useful post.		on 19/11/2023(UTC)
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Razonar		#8 Posted : 19 November 2023 08:42:44(UTC)
Rank: Advanced Member Groups: Registered Joined: 28/08/2014(UTC) Posts: 1,367 Was thanked: 827 time(s) in 524 post(s)		Hi. Another way. zroots.sm (20kb) downloaded 8 time(s). Best regards Alvaro. Edited by user 19 November 2023 08:44:48(UTC)  | Reason: Not specified
2 users thanked Razonar for this useful post.		on 19/11/2023(UTC),  on 19/11/2023(UTC)
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