Undefined function 'minus' for input arguments of type 'sym'
1 view (last 30 days)
Show older comments
This is my first time with the Symbolic Math Toolbox, 2012b. The following code
syms x y
[sol_x, sol_y] = solve(x^2 + y == 1, x - 2*y^2 == 2)
produces the error
Undefined function 'plus' for input arguments of type 'sym'.
What am I doing wrong? There were a lot of threads on roughly this subject, but I couldn't find one where the answer applied to my situation.
Thanks, Kurt
0 Comments
Accepted Answer
Star Strider
on 4 Mar 2014
There could be version differences between 2012a and 2013b (that I’m running here). (I don’t have access to 2012a any more, so I can’t test your code with it.)
Your code works fine for me as you posted it, and produces:
sol_x =
- 1.0997213367630765988805181024643 + 0.56837679138702087076241385221614*i
- 1.0997213367630765988805181024643 - 0.56837679138702087076241385221614*i
1.0997213367630765988805181024643 + 0.30938949574368425547005924661781*i
1.0997213367630765988805181024643 - 0.30938949574368425547005924661781*i
sol_y =
0.11366515845543691213299333209121 + 1.2501121696184858278179094827946*i
0.11366515845543691213299333209121 - 1.2501121696184858278179094827946*i
- 0.11366515845543691213299333209121 - 0.68048445967939729425829595210914*i
- 0.11366515845543691213299333209121 + 0.68048445967939729425829595210914*i
4 Comments
Star Strider
on 5 Mar 2014
My pleasure!
I remember that there were version changes, but I couldn’t remember what the syntax was in 2012b.
More Answers (0)
See Also
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!