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.

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