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明天你好WY

新虫 (小有名气)

[求助] 新手,刚开始学习,有一个问题

>> x = solve('3*u + 9 = 8')
警告: Support of character vectors that are not valid variable names or define a number will be
removed in a future release. To create symbolic expressions, first create symbolic variables and
then use operations on them.
> In sym>convertExpression (line 1586)
  In sym>convertChar (line 1491)
  In sym>tomupad (line 1243)
  In sym (line 199)
  In solve>getEqns (line 406)
  In solve (line 226)
警告: Do not specify equations and variables as character vectors. Instead, create symbolic
variables with syms.
> In solve>getEqns (line 446)
  In solve (line 226)

x =

-1/3
今天刚开始学习,尝试做书上的例子就遇到了这个问题,百度谷歌都没有找到答案,求助

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