How can I curve fitting data for an specific function?

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rn
rn 2014-1-23
编辑： Amit 2014-1-23
I have a chart which has 2 types of data (one for the time and the other one for a measured variable). I need to curve fit those data to find a function like this: y= A*sin(2*pi*f+ang). It requires finding A, f, and ang which best curve fitting those data. What is the process that I can applied to achieve this objective? Have You any documentation to do that?
Thanks a lot.

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Amit
Amit 2014-1-23
编辑：Amit 2014-1-23

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