例1.23.txt

《MATLAB在控制系统中的应用》实例程序

 例1.23   矩阵的指数运算。
>> A=magic(2)					% 生成二阶魔方矩阵。
A =
     1   3
     4   2
>> expm(A)
ans =
  		63.68297406295370  63.54763877971710
  		84.73018503962280  84.86552032285943
>> expm1(A)
ans =
  		63.68297406295370  63.54763877971710
  		84.73018503962280  84.86552032285943
>> expm2(A)
ans =
  		63.68297406295375  63.54763877971715
  		84.73018503962287  84.86552032285947
>> expm3(A)
ans =
  		63.68297406295376  63.54763877971715
  		84.73018503962284  84.86552032285947
>> funm(A,'exp')
ans =
  		63.68297406295375  63.54763877971713
  		84.73018503962284  84.86552032285944