The commands in this section allow for more general operations on the elements of vectors.

The simplest of these operations is `V A` (`calc-apply`

)
[`apply`

], which applies a given operator to the elements of a vector.
For example, applying the hypothetical function `f`

to the vector
‘`[1, 2, 3]`’ would produce the function call ‘`f(1, 2, 3)`’.
Applying the `+`

function to the vector ‘`[a, b]`’ gives
‘`a + b`’. Applying `+`

to the vector ‘`[a, b, c]`’ is an
error, since the `+`

function expects exactly two arguments.

While `V A` is useful in some cases, you will usually find that either
`V R` or `V M`, described below, is closer to what you want.