can any one know how to code for this equation

i also tried to code for this equation but getting error , can anyone help me

this is my program.

>t=0:0.01:10;

L=1.9;

x=(-L/2):0.0019:(L/2);

X=tand(2.42)*(L/2);

w=2*pi()*0.35;

W=2*pi()*0.42;

g=9.81;

n=0:0.1:100;

r=((((-1).^n).*4.*L.*(w.^2).*sin(((2.*n)+1).*pi().*x./L))./((pi().^2).*(((2.*n)+1).^2).*((W.^2)-(w.^2))));

y=sum(r);

N=(w.^2).*X.*sin(w.*t).*(x-y)/g;
..

i should get 1000 r values , i m getting only one know why is this problem

Answer 1

[Torsten]

1. n is integer. So n=0:0.1:100 doesn't make sense.

2. You can't evaluate r for arrays of n and x simultaneously. So loop over different x-values for n=0:100, e.g.

3. In this loop over the x-values, save y in a vector y(loopindex).

Best wishes

Torsten.

[navi g]

thank u torsten, i tried but no results, do you know how to solve this summation equation .

[Torsten]

Please show your modified code.

Best wishes

Torsten.