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function test_OpIns()
//reals
a=[1 2 3; 4 5 6]
a(3)=-2
disp(a);
a(3)=-4+%i
disp(a);
a(1,3)=-12;
disp(a);
a(1,3)=-5+%i;
disp(a);
a([1,2],1)=-12;
disp(a);
a([1,2],1)=-5+%i;
disp(a);
a(2,[2,3])=-12;
disp(a);
a(2,[2,3])=-5+%i;
disp(a);
a([1 2],[1,2,3])=4;
disp(a);
a([1 2],[1,2,3])=3+%i;
disp(a);
a([1,3])=7;
disp(a);
a([1,3])=2+%i;
disp(a);
a([1,3])=[1,0];
disp(a);
a([1,3])=[3-%i,1+%i];
disp(a);
a(2,[1,3])=[-2,-7];
disp(a);
a(2,[1,3])=[-4+%i,-5+%i];
disp(a);
a([1,2],3)=[-9;-1];
disp(a);
a([1,2],3)=[-4+%i;-5+%i];
disp(a);
a([1,2],[2,3])=[-31 -45;-29 -51];
disp(a);
a([1,2],[2,3])=[-4+%i,-5+%i;-4+%i,-5+%i];
disp(a);
//complexes
b=[1-3*%i 2+%i 3+2*%i; 4 5+4*%i 6]
b(3)=-2
disp(b);
b(3)=-4+%i
disp(b);
b(1,3)=-12;
disp(b);
b(1,3)=-5+%i;
disp(b);
b([1,2],1)=-12;
disp(b);
b([1,2],1)=-5+%i;
disp(b);
b(2,[2,3])=-12;
disp(b);
b(2,[2,3])=-5+%i;
disp(b);
b([1 2],[1,2,3])=4;
disp(b);
b([1 2],[1,2,3])=3+%i;
disp(b);
b([1,3])=7;
disp(b);
b([1,3])=2+%i;
disp(b);
b([1,3])=[1,0];
disp(b);
b([1,3])=[3-%i,1+%i];
disp(b);
b(2,[1,3])=[-2,-7];
disp(b);
b(2,[1,3])=[-4+%i,-5+%i];
disp(b);
b([1,2],3)=[-9;-1];
disp(b);
b([1,2],3)=[-4+%i;-5+%i];
disp(b);
b([1,2],[2,3])=[-31 -45;-29 -51];
disp(b);
b([1,2],[2,3])=[-4+%i,-5+%i;-4+%i,-5+%i];
disp(b);
endfunction
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