please help me with this

1 次查看（过去 30 天）

显示更早的评论

arsalan mehrabi 2020-12-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/702802-please-help-me-with-this

评论： Ameer Hamza 2020-12-27

采纳的回答： Ameer Hamza

在 MATLAB Online 中打开

hi i have a problem with solve:

syms t1 t2 t3 t4 t5 t6 
eqns = (-0.7591*t1+0.3789*t2 == -38.689,0.3789*t1-0.7591*t2+0.3789*t3 == -0.799 , 0.3789*t2-0.7591*t3+0.3789*t4 ==-0.799,0.3789*t3-0.7591*t4+0.3789*t5 == -0.799,0.3789*t4-0.7591*t5+0.3789*t6 == -0.799,0.3789*t5-0.3802*t6 == -0.0412 );
S = solve(eqns,[t1 t2 t3 t4 t5 t6])

but it give me this error:

Invalid expression. When calling a function or indexing a variable, use parentheses.

Otherwise, check for mismatched delimiters.

what can i do to solve it?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Ameer Hamza 2020-12-26

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/702802-please-help-me-with-this#answer_584597

在 MATLAB Online 中打开

Use square brackets instead of parenthesis in the definition of eqns

syms t1 t2 t3 t4 t5 t6 
eqns = [-0.7591*t1+0.3789*t2 == -38.689, 0.3789*t1-0.7591*t2+0.3789*t3 == -0.799 , 0.3789*t2-0.7591*t3+0.3789*t4 ==-0.799,0.3789*t3-0.7591*t4+0.3789*t5 == -0.799,0.3789*t4-0.7591*t5+0.3789*t6 == -0.799,0.3789*t5-0.3802*t6 == -0.0412 ];
      %^ use this
S = solve(eqns,[t1 t2 t3 t4 t5 t6])