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How to calculate this values manually.

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Dhruba
Dhruba 2020-5-7
评论： Ion Stefanache 2021-11-19
a=7;b=cos(a),b=cosh(a)
b =
0.7539
b =
548.3170
  1 个评论
Ion Stefanache
Ion Stefanache 2021-11-19
maybe can use one approximation arraund x0=a=7 using Taylor series:
https://en.wikipedia.org/wiki/Taylor_series

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回答（1 个）

Akihumi
Akihumi 2020-5-7
Why not just refer to the documentations of the functions at:
https://www.mathworks.com/help/matlab/ref/double.cos.html
https://www.mathworks.com/help/matlab/ref/cosh.html
You can see the formula in More About section.

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