Undefined function 'chi' for input arguments of type 'double'.

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Anjali Sharma
Anjali Sharma 2018-7-18
回答： Walter Roberson 2018-7-18
I am calculating zeroth order Bessel root function using function 'chi'. This yielded me the roots successfully for the range I had asked for. Now today when I m running the same code, 'Undefined function 'chi' for input arguments of type 'double' has been displayed. one day this function is acceptable and the next day it is not. I m unable to understand this.Anybody please help.

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Walter Roberson
Walter Roberson 2018-7-18
chi is not a Mathworks function, and does not appear to be part of any File Exchange contribution either.

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