# ooom

From spray v1.0-8
by Robin K S Hankin

##### One-over-one-minus for spray objects

One-over-one-minus for spray objects; the nearest to ‘division’ that we can get.

- Keywords
- symbolmath

##### Usage

`ooom(S, n)`

##### Arguments

- S
object of class spray

- n
Order of the approximation

##### Details

Returns the Taylor expansion to order \(n\).

##### Value

Returns a spray object of the same arity as `S`

.

##### Note

Uses Horner's method for efficiency

##### Examples

```
# NOT RUN {
a <- homog(4,2)
jj <- (1-a)*ooom(a,3)
constant(jj) # should be 1
rowSums(index(jj)) # a single 0 and lots of 8s.
# }
```

*Documentation reproduced from package spray, version 1.0-8, License: GPL (>= 2)*

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