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mathnet / mathnet-symbolics

Math.NET Symbolics
http://symbolics.mathdotnet.com
MIT License
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Add missing trigonometric and hyperbolic functions #46

Closed diluculo closed 6 years ago

diluculo commented 6 years ago

All missing trigonometric and hyperbolic functions are added.

diluculo commented 6 years ago

In the internet, I couldn't find any reference to express sinh(n*x) for positive integer n in terms of sinh(x) and cosh(x). The picture below shows my derived formulas that is used in the Trigonometric.expand. It is very similar to already implemented sin(n*x) in the method.

multiple angle formula

cdrnet commented 6 years ago

Indeed - Abramowitz/Stegun does list expansions for n up to 4, but no generic expression either.

Thanks!