菜鸟求教:MATLAB limit用法
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:综合作业 时间:2024/06/22 21:18:16
菜鸟求教:MATLAB limit用法
>> f=sym('x^2+4*x+10')
>> limit(f,x,a)
Undefined function or variable 'x'.
>> limit(f,a)
Undefined function or variable 'a'.
还有:
>> f=sym('sqrt(1+1/n)');
>> limit(f,n,inf)
Undefined function or variable 'n'.
>> int(f,v)
Undefined function or variable 'v'.
>> int(f,a,b)
Undefined function or variable 'a'.
>> int(f,v,a,b)
Undefined function or variable 'v'.
>> f=solve(eq)
Error using ==> eq
Not enough input arguments.
Error in ==> eq at 18
[varargout{1:nargout}] = builtin('eq',varargin{:});
>> f=solve(eq,var)
Error using ==> eq
Not enough input arguments.
Error in ==> eq at 18
[varargout{1:nargout}] = builtin('eq',varargin{:});
>> f=sym('x^2+4*x+10')
>> limit(f,x,a)
Undefined function or variable 'x'.
>> limit(f,a)
Undefined function or variable 'a'.
还有:
>> f=sym('sqrt(1+1/n)');
>> limit(f,n,inf)
Undefined function or variable 'n'.
>> int(f,v)
Undefined function or variable 'v'.
>> int(f,a,b)
Undefined function or variable 'a'.
>> int(f,v,a,b)
Undefined function or variable 'v'.
>> f=solve(eq)
Error using ==> eq
Not enough input arguments.
Error in ==> eq at 18
[varargout{1:nargout}] = builtin('eq',varargin{:});
>> f=solve(eq,var)
Error using ==> eq
Not enough input arguments.
Error in ==> eq at 18
[varargout{1:nargout}] = builtin('eq',varargin{:});
![菜鸟求教:MATLAB limit用法](/uploads/image/z/17018166-30-6.jpg?t=%E8%8F%9C%E9%B8%9F%E6%B1%82%E6%95%99%EF%BC%9AMATLAB+limit%E7%94%A8%E6%B3%95)
你的变量没有定义.符号计算,要先定义符号变量:syms a b c .
limit(A,B,C) A:函数 B:待赋值的变量 C:要给变量赋的值
limit(A,B,C) A:函数 B:待赋值的变量 C:要给变量赋的值