error: Matrix dimensions must agree

code:

x=linspace(-5,5,1000);

n=double(1:1:100);

l=2;

f=sin(x);

g=cos(x);

s=0;

landa=((n*pi)/l );

a=(2/l)*int(f.*sin((n*pi)/l)*x,0,l);

b=(2/(l*landa))*int(g*sin((n*pi*x)/l,0,l));

for n=1:1:1000

p=((a*cos(landa*t)+ b*sin(landa*t))*sin((n*pi*x)/l));

s=s + p;

end

plot (x,t,s)

[KSSV]

a=(2/l)*int(f.*sin((n*pi)/l)*x,0,l);

In the above f,x is 1*1000 and n is 1*100..you cannot mulitply them....rethink on your code.

[Walter Roberson]

please do not close questions that have an answer

Answer 1

[KSSV]

syms x n
% n=double(1:1:100);
l=2;
f=sin(x);
g=cos(x);
s=0;
landa=((n*pi)/l );
a=(2/l)*int(f*sin((n*pi)/l)*x,0,l);
b=(2/(l*landa))*int(g*sin((n*pi*x)/l),0,1);