Hi all
I'm trying to exponentiate the small antisymmetric matrix (infinitesimal
rotation of angle x). Following the ideas of the thread «How does one
define a real variable», I try the following :
sage : var('x')
sage: assume(x,'real')
sage : X=matrix([ [0,1],[-1,0] ])
sage: R=exp(x*X)
Hello,
On Tue, May 25, 2010 at 8:11 AM, Laurent moky.m...@gmail.com wrote:
By the way, the following works :
sage : a=R[0][0]
sage: (a.real_part()+a.imag_part()).simplify_full()
cos(x)
How can automatize it ? Is it a way to perform this simplification to each
element of the matrix at once
