Some integrals with problematic evaluation

[parisse]

(03-23-2016 04:02 PM)quinyu Wrote:  

Code:

int(tan(x)*tan(x-A),x)

I think it's much easier to expand tan(x-a) then we are back to a rational fraction in tan(x). You can already get it with Xcas online http://www-fourier.ujf-grenoble.fr/%7epa...tan(x-a))&