How to calculate this values manually.

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Dhruba
Dhruba il 7 Mag 2020
Commentato: Ion Stefanache il 19 Nov 2021
a=7;b=cos(a),b=cosh(a)
b =
0.7539
b =
548.3170
  1 Commento
Ion Stefanache
Ion Stefanache il 19 Nov 2021
maybe can use one approximation arraund x0=a=7 using Taylor series:
https://en.wikipedia.org/wiki/Taylor_series

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Akihumi
Akihumi il 7 Mag 2020
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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