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s:=[1,4,25,9,16,25];
[seq(i^2, i=1..5)];
nops(s);
6
L:=[seq(rand(0..10)(), i=1..10)];
select(x->x<5, L);
M1:={b,a,c};
M3:=[1,1,2,2,3,3];
M4:=convert(M3, set);
convert(M4, list);
M2:={a,b};
M1 union M2;
M1 intersect M2;
M1 minus M2;
with(LinearAlgebra):
d:=Matrix([[1,2,3], [1,4,9], [1,16,27]]);
h:=(i,j)->1/(i+j-x):
h4:=Matrix(4,4,h);
>>
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>> C:=Transpose(d);
d.C;
E:=MatrixInverse(d);
d.E;
Rank(d);
3
Determinant(d);
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