R: Laguerre functions

Laguerre {gsl} | R Documentation

## Laguerre functions

### Description

Laguerre functions as per the Gnu Scientific Library reference manual section 7.22. These functions are declared in header file `gsl_sf_laguerre.h`

### Usage

    laguerre_1(a, x, give=FALSE, strict=TRUE)
    laguerre_2(a, x, give=FALSE, strict=TRUE)
    laguerre_3(a, x, give=FALSE, strict=TRUE)
    laguerre_n(n, a, x, give=FALSE, strict=TRUE)

### Arguments

`a,x` | input: real values
`n` | input: integer values
`give` | Boolean with `TRUE` meaning to return a list of three items: the value, an estimate of the error, and a status number
`strict` | Boolean, with `TRUE` meaning to return `NaN` if status is an error

### Author(s)

Robin K. S. Hankin

### References

http://www.gnu.org/software/gsl

### Examples

    x <- seq(from=0,to=6,len=100)
    plot(x,laguerre_n(2,0,x),xlim=c(0,6),ylim=c(-2,3),
              type="l",xaxt="n",yaxt="n",bty="n",xlab="",ylab="",
              main="Figure 22.9, p780")

    lines(x,laguerre_n(3,0,x))
    lines(x,laguerre_n(4,0,x))
    lines(x,laguerre_n(5,0,x))
    axis(1,pos=0)
    axis(2,pos=0)

[Package gsl version 2.1-6 Index]