norm of vector with cosine(var)
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Arne Kähler
am 20 Feb. 2021
Beantwortet: Arne Kähler
am 21 Feb. 2021
How can I calculate the norm of a vector which is of form [sin(t);cos(t)]?
I tried
f=x*y^2;gamma=[2*cos(t);sin(t)];tmin=0;tmax=2*pi;
mod=matlabFunction(norm(dgamma))
value=int((fgamma)*mod,t,tmin,tmax)
with answer
mod =
function_handle with value:
@(t)sqrt(abs(cos(t)).^2+abs(sin(t)).^2.*4.0)
value = int(2*cos(t)*sin(t)^2*(abs(cos(t))^2 + 4*abs(sin(t))^2)^(1/2), t, 0, 2*pi)
3 Kommentare
John D'Errico
am 21 Feb. 2021
Bearbeitet: John D'Errico
am 21 Feb. 2021
Ok, so you have a more complex vector. I would note that what you claim you tried is meaningless, because it uses undefined variables, etc.
What is wrong with norm(V)?
And if that does not work, then what is wrong with sqrt(sum(V.^2))?
If you say you had problems, then you need to say WHAT problems, because what I've written does what you are asking. AND, you need to show code that actually does what you claim you tried.
Akzeptierte Antwort
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Matrix Indexing finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!