I can use functions- "sym()" and "syms()".
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when I use functions-sym() and syms(), warning is that "Undefined function 'sym'/'syms' for input arguments of type 'char' ". why, and how I should modify it?
回答（2 个）
Alexander
2013-3-19
0 个投票
The functions sym and syms are part of the Symbolic Math Toolbox. Are you sure that you have the Symbolic Math Toolbox installed?
vx2008
2013-3-19
0 个投票
1 个评论
Walter Roberson
2013-3-19
The Professional and Academic licenses do not include the Symbolic Math Toolbox; it is extra cost for those licenses for both the "a" and "b" releases.
The Student Version does include it, but does not install it by default. Historically, Student Versions have been released once per year, corresponding to the "a" release (with only one exception).
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