EXPM Matrix Exponential

Section: Array Generation and Manipulations

Usage

Calculates e^A for a square, full rank matrix A. The syntax for its use is

   y = expm(A)

Internally, expm is mapped to a simple e^A expression (which in turn uses the eigenvalue expansion of A to compute the exponential).

Example

An example of expm

--> A = [1 1 0; 0 0 2; 0 0 -1]
A = 
  <int32>  - size: [3 3]
 
Columns 1 to 3
          1           1           0  
          0           0           2  
          0           0          -1  
--> expm(A)
ans = 
  <double>  - size: [3 3]
 
Columns 1 to 3
 2.71828182845904509  1.71828182845904509  1.08616126963048720  
 0.00000000000000000  1.00000000000000000  1.26424111765711533  
 0.00000000000000000  0.00000000000000000  0.36787944117144233