how to code a sum of function in matlab
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I have already did a code for this function but without sum it didnt give me the right result
clear
el= 0.3;
L= 0.57 ;
h= 0.15;
t=0:0.5:20;
x=0.02;
omega1=6.0578;
omega=6.66358;
g=9.81;
A=0.0333179;
k=((1/L)*pi);
D=4*omega/L*cosh(k*h)*(1/k^(2));
C=omega*D*pi/((omega1)^(2)-(omega)^(2));
A1=-C*(D/omega);
z=(1/g)*sin(k*(x-(L/2)))*cosh(k*h)*(-A*omega1*sin(omega1*t)-C*omega*sin(omega*t))-1/g*A*omega*(x-L/2)*sin(omega*t) ;
figure
plot(t,z);
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1555532/image.png)
1 commentaire
Dyuman Joshi
le 1 Déc 2023
The value of k is dependent on n, whereas you have defined it as a constant.
Thus, other subsequent definitions are incorrect.
And the summation is w.r.t n, whereas you are performing it w.r.t t.
Réponse acceptée
Torsten
le 29 Nov 2023
Déplacé(e) : Torsten
le 29 Nov 2023
Generate the elements that you want to sum in a matrix M of size (N,nt) where N is the index up to which you want to sum and nt is the number of time points in the "t" array. After you did this, use sum(M,1) to build the sum over the rows of M.
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