R: Matrix Exponentiation

mexp {rmutil} | R Documentation

## Matrix Exponentiation

### Description

`mexp` calculates `exp(t*x)` for the square matrix, `x`, by spectral decomposition or series expansion.

### Usage

    mexp(x, t=1, type="spectral decomposition", n=20, k=3)

### Arguments

`x` | A square matrix.
`t` | Constant multiplying the matrix.
`type` | Algorithm used: spectral decomposition or series approximation.
`n` | Number of terms in the series expansion.
`k` | Constant divisor to avoid over- or underflow (series approximation only).

### Value

`mexp` returns the exponential of a matrix.

### Author(s)

J.K. Lindsey

### Examples

    x <- matrix(c(1,2,3,4),nrow=2)
    mexp(x)

[Package rmutil version 1.1.3 Index]