Jove! it's stupidity on my part.
Thanks
Le jeudi 13 février 2020 16:16:23 UTC+1, Jean-François Ingenbleek a écrit :
>
> var("u,v,l",domain=RR)
> sigma = vector([u*cos(v),u*sin(v),l*u])
> Dsigma = matrix([[diff(s,u) for s in sigma],[diff(s,v) for s in
> sigma]]).transpose()
> print(Dsigma)
> EFG = (Dsigma.transpose())*Dsigma
> EFG.simplify_trig()
> print(EFG)
>
> gives
>
> [ cos(v) -u*sin(v)]
> [ sin(v) u*cos(v)]
> [ l 0]
>
> [ l^2 + cos(v)^2 + sin(v)^2 0]
> [ 0 u^2*cos(v)^2 + u^2*sin(v)^2]
>
>
> Why Simplify_trig does not work in this case?
>
>
> Thanks to everybody
>
>
--
You received this message because you are subscribed to the Google Groups
"sage-support" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/sage-support/00bec925-52f1-46a1-853a-86fb32bca4ce%40googlegroups.com.
