Subject: Implementation of the Struve H and L functions
From: Dieter Kaiser
Date: Wed, 28 Oct 2009 17:21:10 +0100
Am Mittwoch, den 28.10.2009, 17:08 +0100 schrieb Dieter Kaiser:
> To get the most simple results for the Struve L function it would be
> nice to implement simplifications like
>
> sinh(x-%i*%pi) -> -sinh(x)
> sinh(x-%i*%pi/2) -> -%i*cosh(x)
>
> A more general rule can be obtained with the help of the following
> formula:
>
> sinh(a+b*%i) -> %i*cosh(a)*sin(b)+cos(b)*sinh(a)
>
> This can be done for cosh function too. I will try a general extension
> to the simplifier of sinh and cosh.
Sorry, we already have this simplification. It is the flag $trigexpand
which causes the above simplifications.
Dieter Kaiser