Solving a complex integral

4 visualizzazioni (ultimi 30 giorni)
Sergio Manzetti
Sergio Manzetti il 9 Feb 2018
Hi, I have a complex integral to solve, however, there are some weird things here:
syms x h a b c n k
F = cos.^2(n.*pi.*x);
G = cos.^2(n.*pi.*x).*x.^2;
a = i.*h.^3.*diff(F,x,3);
b = -k.*[diff(G,x,3)];
c = 1/4.*k.*x.^4.*(cos.^2(n.*pi.*x));
f = a.*b.*c
result2a = int(f, x)
result2b1 = vpa(result2a)
result2b2 = double(result2a)
However, F = cos.^2(n.*pi.*x); is not accepted, why?

Risposta accettata

Birdman
Birdman il 9 Feb 2018
Modificato: Birdman il 9 Feb 2018
F = cos(n.*pi.*x).^2;
and the same goes for other cos terms.

Più risposte (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by