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Subtraction

`C = `

subtracts array `A`

- `B`

`B`

from array `A`

by
subtracting corresponding elements. The sizes of `A`

and
`B`

must be the same or be compatible.

If the sizes of `A`

and `B`

are compatible,
then the two arrays implicitly expand to match each other. For example, if
`A`

or `B`

is a scalar, then the scalar is
combined with each element of the other array. Also, vectors with different
orientations (one row vector and one column vector) implicitly expand to form a
matrix.