There are many more operations available for matrices than for immutable matrices, but mutable matrices are sometimes easier to construct.
i1 : m = mutableMatrix(ZZ,3,5)
o1 = 0
o1 : MutableMatrix
|
i2 : m_(1,2) = 3
o2 = 3
|
i3 : m_(2,4) = 54
o3 = 54
|
i4 : m_(0,0) = -12
o4 = -12
|
i5 : m
o5 = | . . . . . |
| . . 338704817867893231577095706380455497139486721 . . |
| . . . . 386301431134502427122801344629774236456495554532748723637180678932042787955182537323154180625915735143388235490432544378103925367657231375021267001795401591496446839192053086000305528527833929795700030529869834013338073956882108074556693591058841471480506573079497210495823805310495930371557513704142465810028649031215997280694549071472219293434699799147084371191679011206091821469176502389584138505855076083877803111812553202869071875005509510067024339002820625258057894760324366020891981552413833636610050 |
o5 : MutableMatrix
|
i6 : matrix m
o6 = 0
3 5
o6 : Matrix ZZ <--- ZZ
|