Undefined function 'twofunc' for input arguments of type 'double'?

2017 11 17
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更新时间：2017 11 17
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while calculation optimization problem by using genetic alorith solver in optimization tool , "it says Undefined function 'twofunc' for input arguments of type 'double'", what does it mean?

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Walter Roberson
Walter Roberson 2017-11-17

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Your code calls a function named twofunc but your code does not define twofunc.
Another possibility is that you used a variable named twofunc before you assigned a value to it.
There is no Mathworks supplied function named twofunc anywhere in any toolbox.

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