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 = 
  1  1  0 
  0  0  2 
  0  0 -1 

--> expm(A)

ans = 
    2.7183    1.7183    1.0862 
         0    1.0000    1.2642 
         0         0    0.3679