need help solving this summation
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Luke Radcliff
on 10 Jun 2016
Commented: Roger Stafford
on 11 Jun 2016
I need to solve this, but keep getting an error about the matrix, probably dealing with the x and y variables set.
L=3; W=5; x=linspace(0,L,10);
y = linspace(0,W,7); N=9;
P = 1:2:N
w = 2/pi .* sum(2./P .* sin(P.*pi.*x./L) .* (sinh(P.*pi.*y./L) ./ sinh(P.*pi.*W./L)))
there is a picture attached, showing the summation, I might not even be doing this right Im new to matlab. It has to be done using the sum function not symsum, a for loop also can be done to solve this if possible.
2 Comments
Accepted Answer
Roger Stafford
on 11 Jun 2016
Make these changes in your code:
L=3;
W=5;
x=linspace(0,L,10);
y = linspace(0,W,7);
N=9;
P = 1:2:N
for ix = 1:10
for iy = 1:7
w(ix,iy) = 2/pi .* sum(2./P .* sin(P.*pi.*x(ix)./L) .* (sinh(P.*pi.*y(iy)./L) ./ sinh(P.*pi.*W./L)));
end
end
2 Comments
Roger Stafford
on 11 Jun 2016
You need to sum with respect to the five values in P. Either do it with the 'sum' function or make another nested for-loop (the latter of which seems a little unnecessary - 'sum' does its job quite well.)
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