[sage-support] Re: Norm of real valued vector
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()
sqrt((abs(cos(p))^2 + abs(sin(p))^2)*abs(r)^2)
which must gives me: r
How can I define real valued vector?
or How can I withdraw abs() function from norm?
Ubuntu 13.10
Sage Version 6.1.1, Release Date: 2014-02-04
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[sage-support] Re: Norm of real valued vector
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: rr.simplify_full()
sqrt((abs(cos(p))^2 + abs(sin(p))^2)*abs(r)^2)
which must gives me: r
How can I define real valued vector?
or How can I withdraw abs() function from norm?
Ubuntu 13.10
Sage Version 6.1.1, Release Date: 2014-02-04
--
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sage-support group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sage-support+unsubscr...@googlegroups.com.
To post to this group, send email to sage-support@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-support.
For more options, visit https://groups.google.com/d/optout.
