matlab写个表达式,提示 Unbalanced or unexpected parenthesis or brack

来源：学生作业帮编辑：作业帮分类：综合作业时间：2024/05/24 00:16:13

matlab写个表达式,提示 Unbalanced or unexpected parenthesis or bracket
syms y x1 x2
>> x1=1:10;
>> x2=2:11;
>> y=20+(x1.)^2+(x2.)^2-10*(cos(2*pi*x1)+cos(2*pi*x2));
y=20+(x1.)^2+(x2.)^2-10*(cos(2*pi*x1)+cos(2*pi*x2));
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Error:Unbalanced or unexpected parenthesis or bracket.
怎么破

是括号不匹配的意思
这里y=20+(x1.)^2+(x2.)^2-10*(cos(2*pi*x1)+cos(2*pi*x2));要改写为
y=20+(x1).^2+(x2).^2-10*(cos(2*pi*x1)+cos(2*pi*x2));

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