matlab 方程组求解含参数的根

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就这个题目为啥sym老是出错尝试了很多办法也没有用。另外如果加入循环该怎么搞

solve不带这样用的,输入参数太多;
正确调用格式包括:

S = solve(eqn,var)
S = solve(eqn,var,Name,Value)
Y = solve(eqns,vars)
Y = solve(eqns,vars,Name,Value)
[y1,...,yN] = solve(eqns,vars)
[y1,...,yN] = solve(eqns,vars,Name,Value)
[y1,...,yN,parameters,conditions] = solve(eqns,vars,'ReturnConditions',true)