I can I use Si and Ci Integral functions in Matlab? I need to use these functions for my Matlab code.

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vera Rajan
vera Rajan on 28 May 2015
Edited: John D'Errico on 29 May 2015
Ci(1)

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Answers (2)

John D'Errico
John D'Errico on 28 May 2015
Edited: John D'Errico on 28 May 2015
Code for Fresnel sine and cosine on the File exchange has been there for some years now.
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vera Rajan
vera Rajan on 29 May 2015
>> fresnelC(1.38,0) Undefined function 'fresnelC' for input arguments of type 'double'. John thanks, I tried but not working...
John D'Errico
John D'Errico on 29 May 2015
Edited: John D'Errico on 29 May 2015
Um, you need to DOWNLOAD it and put the directory on your search path before you use it! This a basic of tools you will find on the file exchange. MATLAB does not magically know how to use code that it cannot see. Once you have done that...
fresnelC(1.38,0)
ans =
0.56297592577244

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Walter Roberson
Walter Roberson on 29 May 2015
If you have the Symbolic Toolbox, the interface to these is sinint and cosint

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