To load numbers into a matrix you hit:
2nd x^-1
Go over to edit and hit enter
# enter by # enter
then just plug in all the numbers of the matrix.
When adding, equal dimentions in matricies will add corresponding elements. Subtracting works the same.
Adding has commutativity but subtracting does not.
Scalers multiplication - think distrubutitve method. It is commutitive.
Elcie
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