A = zeros(N);
-
-% intF = @(f,k1,k2,l1,l2) ...
-% f(k1,k2,l1,l2)-f(k1,k2,l1,0)-f(k1,k2,0,l2)+f(k1,k2,0,0)...
-% -f(k1,0,l1,l2)+f(k1,0,l1,0)+f(k1,0,0,l2)-f(k1,0,0,0)...
-% -f(0,k2,l1,l2)+f(0,k2,l1,0)+f(0,k2,0,l2)-f(0,l2,0,0)...
-% +f(0,0,l1,l2)-f(0,0,l1,0)-f(0,0,0,l2)+f(0,0,0,0);
-%
-% intF(@(x1,x2,y1,y2) F_par(x1,x2,y1,y2,d(1),d(2),d(3)),x(1),x(2),y(1),y(2));
+% untere schranke s t obere schranke k l
+intF = @(f,s1,s2,k1,k2,t1,t2,l1,l2) ...
+ f(k1,k2,l1,l2)-f(k1,k2,l1,t2)-f(k1,k2,t1,l2)+f(k1,k2,t1,t2)...
+ -f(k1,s2,l1,l2)+f(k1,s2,l1,t2)+f(k1,s2,t1,l2)-f(k1,s2,t1,t2)...
+ -f(s1,k2,l1,l2)+f(s1,k2,l1,t2)+f(s1,k2,t1,l2)-f(s1,l2,t1,t2)...
+ +f(s1,s2,l1,l2)-f(s1,0,l1,t2)-f(s1,s2,t1,l2)+f(s1,s2,t1,t2);
+
+% intF(@(s1,s2,k1,k2,t1,t2,l1,l2) F_par(s1,s2,k1,k2,t1,t2,l1,l2,d(1),d(2),d(3))...
+% ,s1,s2,k1,k2,t1,t2,l1,l2);
for j = 1:N
- for k = j+1:N
+ for k = 1:N
ej = coordinates(elements(j,:)',:);
ek = coordinates(elements(k,:)',:);
d = ek(1,:) - ej(1,:)
-
- x = [sum(ej(2,:)-ej(1,:)) sum(ej(3,:)-ej(1,:))]
- y = [sum(ek(2,:)-ek(1,:)) sum(ek(3,:)-ek(1,:))]
-
- A(j,k) = 1/ (4*pi) *... intF(@(x1,x2,y1,y2) F_par(x1,x2,y1,y2,d(1),d(2),d(3)),x(1),x(2),y(1),y(2));
- F_par(x(1),x(2),y(1),y(2),d(1),d(2),d(3));
+
+ A(j,k) = 1/ (4*pi) *...
+ intF(@(x1,x2,y1,y2) F_par(x1,x2,y1,y2,d(1),d(2),d(3))...
+ ,ej(1,1),ej(1,2),ej(2,1), ej(3,2),ek(1,1), ek(1,2),ek(2,1), ek(3,2));
+
end
end