[sage-support] Re: Norm of real valued vector

2014-04-20 Thread Alberto Verga
You may try: r, p = var('r', 'p', domain = 'real') norm( vector([r*cos(p), r*sin(p)]) ).simplify_full() Le samedi 19 avril 2014 20:53:53 UTC+2, Hadi Lq a écrit : Hi everyone sage: R.r,p=RR[] sage: rvec=vector([r*cos(p),r*sin(p)]) sage: rr=rvec.norm() sage: rr.simplify_full()

[sage-support] Re: Norm of real valued vector

2014-04-20 Thread Alberto Verga
add assume r0 r,p = var('r', 'p', domain='real') assume(r0) norm(vector([r*cos(p),r*sin(p)])).simplify_full() to obtain r Le samedi 19 avril 2014 20:53:53 UTC+2, Hadi Lq a écrit : Hi everyone sage: R.r,p=RR[] sage: rvec=vector([r*cos(p),r*sin(p)]) sage: rr=rvec.norm() sage: