Dear Sir,
If you want to use the demoavre identity of exp(i)+exp(-i)=2cos(0)
we can use: trigrat(exp(%i)+exp(-%i));
But on the other hand if you want the hyperbolic identity,
exp(1)+exp(-1)=2cosh(0)
Why does this not implemented?
I think it is much like the previous trigonimetric example{especially
that the documentation says that trigonometric fns are sin, cos, sinh,
cosh,.... }
Unfortunately, I don't have time to learn Lisp, I went to trigrat fn in
my share folder and there was .mac and .lisp.
Thanks
Mohamed Abouzied