Question

Can someone tell me how matrix operations can be undefined? Or considered undefined? :)

Answer 1

One example is matrix addition. Matrix addition is only defined if the two matrices are of the same exact size since each corresponding component is added to form a new and final corresponding component


matrix addition is undefined if the two matrix sizes are different

Answer 2

Another example is if you need to take the inverse of a matrix. For a matrix A, its inverse is defined as \[A = {1\over \text{det}(A)}(C_{ij})^{T}\]so if the determinant of A is zero, the inverse is of course undefined. A bit more complex than jim's example but there ya go

Answer 3

? O.O Um...what if they look like this? I've never seen the way you did yours montypython. O___O ...?...

Answer 4

not sure what you're trying to do...

Answer 5

did you mean to fill it with values?

Answer 6

^This