i1 : f = mutableMatrix {{1,2,3,4}} o1 = | 1 2 3 4 | o1 : MutableMatrix |
i2 : f_(0,2) o2 = 3 |
i3 : f_(0,2) = 33 o3 = 33 |
i4 : f o4 = | 1 2 33 4 | o4 : MutableMatrix |
i5 : R = QQ[a..z] o5 = R o5 : PolynomialRing |
i6 : mutableMatrix genericMatrix(R,3,3) o6 = | a d g | | b e h | | c f i | o6 : MutableMatrix |