如何在Matlab中将Mupad符号'I'{sqrt(-1)}转换为'i' [英] How to convert Mupad symbol 'I' {sqrt(-1)} to 'i' in matlab

问题描述

我正在尝试在Matlab中评估此积分

I am trying to evaluate this integral in matlab

由于"I"，matlab将​​ ans"视为符号.如何将此"I"转换为"i"，以便ans变为复数.

matlab is treating 'ans' as a symbol because of 'I'. How to convert this 'I' into 'i' so that ans becomes a complex number.

非常感谢！

推荐答案

符号数学工具箱具有重载的double函数，该函数可用于将sym转换为double表示形式(如果表达式是符号表示的话)常数或为常数表达式.

The symbolic math toolbox has an overloaded double function that can be used to convert from sym to double representation (if the expression is a symbolic constant or is a constant expression).

例如:

ans_sym = vpa(1+1*i);
ans_double = double(ans_sym);

有关更多信息，请参见此处: http://www.mathworks.se/help/toolbox/symbolic/double.html .

Look here for more information: http://www.mathworks.se/help/toolbox/symbolic/double.html.

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