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johnpan		#1 Posted : 01 January 2022 04:44:30(UTC)
Rank: Member Groups: Registered Joined: 01/01/2022(UTC) Posts: 12		Hi, guys: I'm a new one to SMath. and have a question on system of equations. here is a simple question how to get the result of x, y without using the matrix? I tried solve and findroot, but can't get the value of x, y. Thank you for the help Happy New Year!
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overlord		#2 Posted : 01 January 2022 13:59:32(UTC)
Rank: Advanced Member Groups: Registered Joined: 23/07/2013(UTC) Posts: 1,128 Was thanked: 509 time(s) in 339 post(s)		Originally Posted by: johnpan how to get the result of x, y without using the matrix? I tried solve and findroot, but can't get the value of x, y. You can't use solve() for nonlinear equations. (more than one unknowns) You can use roots(), FindRoot() or al_nleqsolve(). Here is your equation solved in various ways. Regards solvers.sm (11kb) downloaded 18 time(s). Edited by user 01 January 2022 14:14:27(UTC)  | Reason: Not specified
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Jean Giraud		#3 Posted : 01 January 2022 16:17:57(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: johnpan how to get the result of x, y without using the matrix ? Matrix style is more commonly encountered in Engineering projects. That add-on will enrich your future projects.
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johnpan		#4 Posted : 01 January 2022 17:22:51(UTC)
Rank: Member Groups: Registered Joined: 01/01/2022(UTC) Posts: 12		Excellent reply! FindRoot is better for my condition, I need units. Thanks Overlord! Originally Posted by: overlord Originally Posted by: johnpan how to get the result of x, y without using the matrix? I tried solve and findroot, but can't get the value of x, y. You can't use solve() for nonlinear equations. (more than one unknowns) You can use roots(), FindRoot() or al_nleqsolve(). Here is your equation solved in various ways. Regards
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johnpan		#5 Posted : 01 January 2022 17:25:11(UTC)
Rank: Member Groups: Registered Joined: 01/01/2022(UTC) Posts: 12		Thank you, Jean, you're right, I need more practice. Originally Posted by: Jean Giraud Originally Posted by: johnpan how to get the result of x, y without using the matrix ? Matrix style is more commonly encountered in Engineering projects. That add-on will enrich your future projects.
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Jean Giraud		#6 Posted : 01 January 2022 21:38:12(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: Jean Giraud Matrix style is more commonly encountered in Engineering projects. That example has only one CAS route ... naturally 15 D.
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johnpan		#7 Posted : 02 January 2022 02:24:17(UTC)
Rank: Member Groups: Registered Joined: 01/01/2022(UTC) Posts: 12		Thanks! Jean
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