Undefined function or variable 'equationsToMatrix'.
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Hi all,
I encountered an issue when I tried to solve the systematic equations.
By following the instructions from https://www.mathworks.com/help/symbolic/equationstomatrix.html, I typed in the exact same codes in to Matlab:
syms x y z
eqns = [x+y-2*z == 0,
x+y+z == 1,
2*y-z == -5];
[A,b] = equationsToMatrix(eqns)
However, I got the error:
Undefined function or variable 'equationsToMatrix'.
I did some search and could not find any solutions. Plus, my MaLab software is installed under the C:/ directory.
Any help would be higly appreciated!
Thanks,
-Yili
1 个评论
your Code works for me.
which equationsToMatrix
what result do you get?
回答（1 个）
madhan ravi
2019-3-24
0 个投票
https://in.mathworks.com/help/symbolic/equationstomatrix.html#bteza8k_seealso - released in 2012 b (requires symbolic math toolbox). If you have 2012b or later make sure you have that toolbox installed and have a valid license for it , if it satisfies all the above then the only way is to contact Mathworks support team by clicking the contact us button on the top right corner of this page.
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2019-3-24
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