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 newmat(row,col [,[[a,b,...],[c,d,...],...]])

:: Creates a new matrix with row rows and col columns.
 return

matrix
 row,col

nonnegative integer
 a,b,c,d

arbitrary

If the third argument, a list, is given, the newly created matrix
is initialized so that each element of the list (again a list)
initializes each of the rows of the matrix.
Elements are used from the first through the last.
If the list is short, 0's are filled in the remaining matrix elements.
If no third argument is given all the elements are cleared to 0.

The size of a matrix is given by function
size()
.

Let
M
be a program variable assigned to a matrix.
Then, M[I]
denotes a (row) vector which corresponds with
the I
th row of the matrix.
Note that the vector shares its element with the original matrix.
Subsequently, if an element of the vector is modified, then the
corresponding matrix element is also modified.

When a matrix is passed to a function as its argument
(actual parameter), the matrix element can be modified within that
function.
[0] A = newmat(3,3,[[1,1,1],[x,y],[x^2]]);
[ 1 1 1 ]
[ x y 0 ]
[ x^2 0 0 ]
[1] det(A);
y*x^2
[2] size(A);
[3,3]
[3] A[1];
[ x y 0 ]
[4] A[1][3];
getarray : Out of range
return to toplevel
 References

section
newvect
, section size
, section det
,invmat
.
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