a 3x3 matrix object
the value at row 0, column 0
the value at row 0, column 1
the value at row 0, column 2
the value at row 1, column 0
the value at row 1, column 1
the value at row 1, column 2
the value at row 2, column 0
the value at row 2, column 1
the value at row 2, column 2
m with elements set to the given values
Sets the elements of the 3x3 matrix
mto the given values